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预设尺寸

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There are 5.25 trillion pieces of plastic trash in the world’s oceans, and each year, 8 million tons of plastic are added to the figure. Though the oceans seem vast enough to stomach a lot of plastic, the level of waste is starting to reach a crisis point: According to a new report by the Ocean Conservancy, by 2025, the ocean could contain one ton of plastic for every three tons of fish.

All these floating bits of plastic not only disrupt marine ecosystems, but also poison the global supply of seafood. “It’s reaching crisis proportions,” says Andreas Merkl, CEO of the Ocean Conservancy. “Plastic breaks down into small pieces that look like plankton (浮游生物) and is eaten by everything from plankton to whales.”

The new report calls for a focus on improving waste management systems in a handful of developing countries that account for the plastic leakage into the ocean. China, Indonesia, the Philippines, Thailand and Vietnam contribute more than half of the oceans’ plastic since their waste facilities haven’t kept up with rapid industrialization.

How can countries reduce the leakage of waste into the ocean? The Ocean Conservancy report suggests that by providing more waste collection services, closing the leakage points within the collection system, getting rid of waste with effective landfill, and building more recycling facilities, the plastics leakage could be cut by 50% by 2020.

It’s not just an environmentalist’s daydream. Coca-Cola and Dow Chemical, along with some other multinational companies, have joined forces with Ocean Conservancy to fight ocean pollution. “We’re committed to working toward a future of a plastic-free ocean. Companies don’t make plastic with the intention of it ending up in the ocean, and we acknowledge the strong role industry must play in order to help eliminate ocean plastic waste by 2035.” Says a Dow Chemical director.

“While building landfills and incinerators (焚化炉) across these developing countries might not be pretty, it’s far more environmentally friendly than letting waste slide into the world’s oceans.” Says Andreas Merkl.

32. Five developing countries are mostly responsible for plastic leakage because    .

A. there are too many factories in those countries

B. they produce the majority of the waste worldwide

C. their waste facilities fail to adapt to rapid industrialization

D. their citizens don’t make good use of waste management systems

33. The underlined word “eliminate” in Paragraph 5 means     .

A. End

B. increase

C. remain

D. reduce

34. From the last two paragraphs, we can learn that     .

A. many companies have begun to play a role in fighting ocean pollution

B. environment-friendly plastics will be invented by multinational factories

C. developing countries will be much more beautiful with a plastic-free ocean

D. landfills and incinerators have greatly reduced plastic leakage into the ocean

35. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

36. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

37. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

The production of coffee beans is a huge，profitable business，but，unfortunately，full-sun production is taking over the industry and bringing about a lot of damage．The change in how coffee is grown from shade-grown production to full-sun production endangers the very existence of certain animals and birds and even disturbs the world's ecological balance．

    On a local level，the damage of the forest required by full-sun fields affects the area's birds and animals．The shade of the forest trees provides a home for birds and other species that depend on the trees' flowers and fruits．Full-sun coffee growers destroy this forest home．As a result，many species are quickly dying out．

    On a more global level，the destruction of the rainforest for full-sun coffee fields also threatens human life．Medical research often makes use of the forests'plant and animal life．and the destruction of such species could prevent researchers from fending cures for certain diseases．In addition，new coffee-growing techniques are poisoning the water locally，and eventually the world's groundwater．

    Both locally and globally，the continued spread of full-sun coffee plantations could mean the destruction of the rainforest ecology．The loss of shade trees is already causing a slight change in

the world's climate，and studies show that loss of oxygen-giving trees also leads to air pollution and global warming．Moreover，the new growing techniques are contributing to acidic(酸性的) soil conditions．

    It is obvious that the way much coffee is grown affects many aspects of life，from the local environment to the global ecology．But consumers do have a choice，They can purchase shade-grown coffee whenever possible，although at a higher cost．The future health of the planet and mankind is surely worth more than an inexpensive cup of coffee．

Title：Full-sun production does(71) ________ to humans
Introduction	Full-sun coffee production endangers the existence of certain species and (72) ________ the balance of world ecology．
	Species	Forest shade is home to birds and other species that are (74) ________ on the flowers and fruits of trees．Full-sun fields require to destroy forest，which results in the(75) ________ of some species．
Effects on different (73)________	Human life	Human life is(76) ________ as well because researchers may(77) ________ to find cures for certain diseases as the result of the destruction of species．
	Environment	Fewer oxygen-giving trees are left，(78) ________ in air pollution and global warming． ·The new coffee techniques poison water and cause acidic soil conditions．
Conclusion	Although shade-grown coffee is more (79) ________．it is worth our while．After all，it is the future health of the earth and humans that (80) ________

"Plastic bags are everywhere!Every day，we are handed countless plastic bags：when we go to grocery stores，clothing stores，book stores and restaurants．Yes，sometimes，they are  convenient，but most of the time，they are avoidable．A plastic bag is just not necessary for that apple you are about to eat or that soda you are going to drink right away．Consider these questions：
    Do I need to take as many plastic bags in supermarkets？
    Do I need a plastic bag for an item purchased that is already well packaged？
    Could I bring my own shopping bag when making purchases？
    Plastic bags are the cause of major environmental concerns．It is thought that an average person uses around 130 plastic bags per year．Using fewer plastic bags is a must in solving environmental problems．
Reasons why you should limit your use of plastic bags：
  1．Plastic bags account for a major part of our waste in landfills(垃圾填埋场) ．Plastic
    bags are light and hard to contain．Because of this，plastic bags fly easily in wind，float along in the currents of rivers and oceans，and get caught in trees and fences．
  2．Plastic bags are made from a non-renewable natural resource(资源)：oil．Therefore，this contributes to the disappearance of our natural resources．
  3．Countless plastic bags end up in our oceans and cause harm to our sea life．Many sea animals and birds mistakenly eat and choke on plastic or become tied up in plastic bags that are floating around．
  4．There are many better alternatives to plastic bags．Paper bags hold more than plastic bags．But the best alternative to using plastic bags is using cloth bags．

46．What's the main idea of the first paragraph？    
A．Plastic bags are uncontrollable
B．Plastic bags are unnecessary．
C．Plastic bags are inconvenient
D．Plastic bags are dangerous．
47．Which of the following is NOT the reason for limiting the use of plastic bags？    
A．They speed up the disappearance of oil
B．They threaten the lives of sea animals．
C．They do harm to trees and fences
D．They pollute the environment．
48．The best thing people can do to help solve the plastic bag problem is to    
A．stop making plastic bags from oil
B．use paper bags instead of plastic bags
C．bring their own cloth bags when shopping
D．pick up plastic bags found in rivers and oceans．"

There are 5.25 trillion pieces of plastic trash in the world’s oceans, and each year, 8 million tons of plastic are added to the figure. Though the oceans seem vast enough to stomach a lot of plastic, the level of waste is starting to reach a crisis point: According to a new report by the Ocean Conservancy, by 2025, the ocean could contain one ton of plastic for every three tons of fish.

All these floating bits of plastic not only disrupt marine ecosystems, but also poison the global supply of seafood. “It’s reaching crisis proportions,” says Andreas Merkl, CEO of the Ocean Conservancy. “Plastic breaks down into small pieces that look like plankton (浮游生物) and is eaten by everything from plankton to whales.”

The new report calls for a focus on improving waste management systems in a handful of developing countries that account for the plastic leakage into the ocean. China, Indonesia, the Philippines, Thailand and Vietnam contribute more than half of the oceans’ plastic since their waste facilities haven’t kept up with rapid industrialization.

How can countries reduce the leakage of waste into the ocean? The Ocean Conservancy report suggests that by providing more waste collection services, closing the leakage points within the collection system, getting rid of waste with effective landfill, and building more recycling facilities, the plastics leakage could be cut by 50% by 2020.

It’s not just an environmentalist’s daydream. Coca-Cola and Dow Chemical, along with some other multinational companies, have joined forces with Ocean Conservancy to fight ocean pollution. “We’re committed to working toward a future of a plastic-free ocean. Companies don’t make plastic with the intention of it ending up in the ocean, and we acknowledge the strong role industry must play in order to help eliminate ocean plastic waste by 2035.” Says a Dow Chemical director.

“While building landfills and incinerators (焚化炉) across these developing countries might not be pretty, it’s far more environmentally friendly than letting waste slide into the world’s oceans.” Says Andreas Merkl.

32. Five developing countries are mostly responsible for plastic leakage because    .

A. there are too many factories in those countries

B. they produce the majority of the waste worldwide

C. their waste facilities fail to adapt to rapid industrialization

D. their citizens don’t make good use of waste management systems

33. The underlined word “eliminate” in Paragraph 5 means     .

A. End

B. increase

C. remain

D. reduce

34. From the last two paragraphs, we can learn that     .

A. many companies have begun to play a role in fighting ocean pollution

B. environment-friendly plastics will be invented by multinational factories

C. developing countries will be much more beautiful with a plastic-free ocean

D. landfills and incinerators have greatly reduced plastic leakage into the ocean

35. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

36. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

37. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

The production of coffee beans is a huge，profitable business，but，unfortunately，full-sun production is taking over the industry and bringing about a lot of damage．The change in how coffee is grown from shade-grown production to full-sun production endangers the very existence of certain animals and birds and even disturbs the world's ecological balance．

    On a local level，the damage of the forest required by full-sun fields affects the area's birds and animals．The shade of the forest trees provides a home for birds and other species that depend on the trees' flowers and fruits．Full-sun coffee growers destroy this forest home．As a result，many species are quickly dying out．

    On a more global level，the destruction of the rainforest for full-sun coffee fields also threatens human life．Medical research often makes use of the forests'plant and animal life．and the destruction of such species could prevent researchers from fending cures for certain diseases．In addition，new coffee-growing techniques are poisoning the water locally，and eventually the world's groundwater．

    Both locally and globally，the continued spread of full-sun coffee plantations could mean the destruction of the rainforest ecology．The loss of shade trees is already causing a slight change in

the world's climate，and studies show that loss of oxygen-giving trees also leads to air pollution and global warming．Moreover，the new growing techniques are contributing to acidic(酸性的) soil conditions．

    It is obvious that the way much coffee is grown affects many aspects of life，from the local environment to the global ecology．But consumers do have a choice，They can purchase shade-grown coffee whenever possible，although at a higher cost．The future health of the planet and mankind is surely worth more than an inexpensive cup of coffee．

Title：Full-sun production does(71) ________ to humans
Introduction	Full-sun coffee production endangers the existence of certain species and (72) ________ the balance of world ecology．
	Species	Forest shade is home to birds and other species that are (74) ________ on the flowers and fruits of trees．Full-sun fields require to destroy forest，which results in the(75) ________ of some species．
Effects on different (73)________	Human life	Human life is(76) ________ as well because researchers may(77) ________ to find cures for certain diseases as the result of the destruction of species．
	Environment	Fewer oxygen-giving trees are left，(78) ________ in air pollution and global warming． ·The new coffee techniques poison water and cause acidic soil conditions．
Conclusion	Although shade-grown coffee is more (79) ________．it is worth our while．After all，it is the future health of the earth and humans that (80) ________

"Plastic bags are everywhere!Every day，we are handed countless plastic bags：when we go to grocery stores，clothing stores，book stores and restaurants．Yes，sometimes，they are  convenient，but most of the time，they are avoidable．A plastic bag is just not necessary for that apple you are about to eat or that soda you are going to drink right away．Consider these questions：
    Do I need to take as many plastic bags in supermarkets？
    Do I need a plastic bag for an item purchased that is already well packaged？
    Could I bring my own shopping bag when making purchases？
    Plastic bags are the cause of major environmental concerns．It is thought that an average person uses around 130 plastic bags per year．Using fewer plastic bags is a must in solving environmental problems．
Reasons why you should limit your use of plastic bags：
  1．Plastic bags account for a major part of our waste in landfills(垃圾填埋场) ．Plastic
    bags are light and hard to contain．Because of this，plastic bags fly easily in wind，float along in the currents of rivers and oceans，and get caught in trees and fences．
  2．Plastic bags are made from a non-renewable natural resource(资源)：oil．Therefore，this contributes to the disappearance of our natural resources．
  3．Countless plastic bags end up in our oceans and cause harm to our sea life．Many sea animals and birds mistakenly eat and choke on plastic or become tied up in plastic bags that are floating around．
  4．There are many better alternatives to plastic bags．Paper bags hold more than plastic bags．But the best alternative to using plastic bags is using cloth bags．

46．What's the main idea of the first paragraph？    
A．Plastic bags are uncontrollable
B．Plastic bags are unnecessary．
C．Plastic bags are inconvenient
D．Plastic bags are dangerous．
47．Which of the following is NOT the reason for limiting the use of plastic bags？    
A．They speed up the disappearance of oil
B．They threaten the lives of sea animals．
C．They do harm to trees and fences
D．They pollute the environment．
48．The best thing people can do to help solve the plastic bag problem is to    
A．stop making plastic bags from oil
B．use paper bags instead of plastic bags
C．bring their own cloth bags when shopping
D．pick up plastic bags found in rivers and oceans．"

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自定义尺寸

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There are 5.25 trillion pieces of plastic trash in the world’s oceans, and each year, 8 million tons of plastic are added to the figure. Though the oceans seem vast enough to stomach a lot of plastic, the level of waste is starting to reach a crisis point: According to a new report by the Ocean Conservancy, by 2025, the ocean could contain one ton of plastic for every three tons of fish.

All these floating bits of plastic not only disrupt marine ecosystems, but also poison the global supply of seafood. “It’s reaching crisis proportions,” says Andreas Merkl, CEO of the Ocean Conservancy. “Plastic breaks down into small pieces that look like plankton (浮游生物) and is eaten by everything from plankton to whales.”

The new report calls for a focus on improving waste management systems in a handful of developing countries that account for the plastic leakage into the ocean. China, Indonesia, the Philippines, Thailand and Vietnam contribute more than half of the oceans’ plastic since their waste facilities haven’t kept up with rapid industrialization.

How can countries reduce the leakage of waste into the ocean? The Ocean Conservancy report suggests that by providing more waste collection services, closing the leakage points within the collection system, getting rid of waste with effective landfill, and building more recycling facilities, the plastics leakage could be cut by 50% by 2020.

It’s not just an environmentalist’s daydream. Coca-Cola and Dow Chemical, along with some other multinational companies, have joined forces with Ocean Conservancy to fight ocean pollution. “We’re committed to working toward a future of a plastic-free ocean. Companies don’t make plastic with the intention of it ending up in the ocean, and we acknowledge the strong role industry must play in order to help eliminate ocean plastic waste by 2035.” Says a Dow Chemical director.

“While building landfills and incinerators (焚化炉) across these developing countries might not be pretty, it’s far more environmentally friendly than letting waste slide into the world’s oceans.” Says Andreas Merkl.

32. Five developing countries are mostly responsible for plastic leakage because    .

A. there are too many factories in those countries

B. they produce the majority of the waste worldwide

C. their waste facilities fail to adapt to rapid industrialization

D. their citizens don’t make good use of waste management systems

33. The underlined word “eliminate” in Paragraph 5 means     .

A. End

B. increase

C. remain

D. reduce

34. From the last two paragraphs, we can learn that     .

A. many companies have begun to play a role in fighting ocean pollution

B. environment-friendly plastics will be invented by multinational factories

C. developing countries will be much more beautiful with a plastic-free ocean

D. landfills and incinerators have greatly reduced plastic leakage into the ocean

35. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

36. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

37. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

The production of coffee beans is a huge，profitable business，but，unfortunately，full-sun production is taking over the industry and bringing about a lot of damage．The change in how coffee is grown from shade-grown production to full-sun production endangers the very existence of certain animals and birds and even disturbs the world's ecological balance．

    On a local level，the damage of the forest required by full-sun fields affects the area's birds and animals．The shade of the forest trees provides a home for birds and other species that depend on the trees' flowers and fruits．Full-sun coffee growers destroy this forest home．As a result，many species are quickly dying out．

    On a more global level，the destruction of the rainforest for full-sun coffee fields also threatens human life．Medical research often makes use of the forests'plant and animal life．and the destruction of such species could prevent researchers from fending cures for certain diseases．In addition，new coffee-growing techniques are poisoning the water locally，and eventually the world's groundwater．

    Both locally and globally，the continued spread of full-sun coffee plantations could mean the destruction of the rainforest ecology．The loss of shade trees is already causing a slight change in

the world's climate，and studies show that loss of oxygen-giving trees also leads to air pollution and global warming．Moreover，the new growing techniques are contributing to acidic(酸性的) soil conditions．

    It is obvious that the way much coffee is grown affects many aspects of life，from the local environment to the global ecology．But consumers do have a choice，They can purchase shade-grown coffee whenever possible，although at a higher cost．The future health of the planet and mankind is surely worth more than an inexpensive cup of coffee．

Title：Full-sun production does(71) ________ to humans
Introduction	Full-sun coffee production endangers the existence of certain species and (72) ________ the balance of world ecology．
	Species	Forest shade is home to birds and other species that are (74) ________ on the flowers and fruits of trees．Full-sun fields require to destroy forest，which results in the(75) ________ of some species．
Effects on different (73)________	Human life	Human life is(76) ________ as well because researchers may(77) ________ to find cures for certain diseases as the result of the destruction of species．
	Environment	Fewer oxygen-giving trees are left，(78) ________ in air pollution and global warming． ·The new coffee techniques poison water and cause acidic soil conditions．
Conclusion	Although shade-grown coffee is more (79) ________．it is worth our while．After all，it is the future health of the earth and humans that (80) ________

"Plastic bags are everywhere!Every day，we are handed countless plastic bags：when we go to grocery stores，clothing stores，book stores and restaurants．Yes，sometimes，they are  convenient，but most of the time，they are avoidable．A plastic bag is just not necessary for that apple you are about to eat or that soda you are going to drink right away．Consider these questions：
    Do I need to take as many plastic bags in supermarkets？
    Do I need a plastic bag for an item purchased that is already well packaged？
    Could I bring my own shopping bag when making purchases？
    Plastic bags are the cause of major environmental concerns．It is thought that an average person uses around 130 plastic bags per year．Using fewer plastic bags is a must in solving environmental problems．
Reasons why you should limit your use of plastic bags：
  1．Plastic bags account for a major part of our waste in landfills(垃圾填埋场) ．Plastic
    bags are light and hard to contain．Because of this，plastic bags fly easily in wind，float along in the currents of rivers and oceans，and get caught in trees and fences．
  2．Plastic bags are made from a non-renewable natural resource(资源)：oil．Therefore，this contributes to the disappearance of our natural resources．
  3．Countless plastic bags end up in our oceans and cause harm to our sea life．Many sea animals and birds mistakenly eat and choke on plastic or become tied up in plastic bags that are floating around．
  4．There are many better alternatives to plastic bags．Paper bags hold more than plastic bags．But the best alternative to using plastic bags is using cloth bags．

46．What's the main idea of the first paragraph？    
A．Plastic bags are uncontrollable
B．Plastic bags are unnecessary．
C．Plastic bags are inconvenient
D．Plastic bags are dangerous．
47．Which of the following is NOT the reason for limiting the use of plastic bags？    
A．They speed up the disappearance of oil
B．They threaten the lives of sea animals．
C．They do harm to trees and fences
D．They pollute the environment．
48．The best thing people can do to help solve the plastic bag problem is to    
A．stop making plastic bags from oil
B．use paper bags instead of plastic bags
C．bring their own cloth bags when shopping
D．pick up plastic bags found in rivers and oceans．"

There are 5.25 trillion pieces of plastic trash in the world’s oceans, and each year, 8 million tons of plastic are added to the figure. Though the oceans seem vast enough to stomach a lot of plastic, the level of waste is starting to reach a crisis point: According to a new report by the Ocean Conservancy, by 2025, the ocean could contain one ton of plastic for every three tons of fish.

All these floating bits of plastic not only disrupt marine ecosystems, but also poison the global supply of seafood. “It’s reaching crisis proportions,” says Andreas Merkl, CEO of the Ocean Conservancy. “Plastic breaks down into small pieces that look like plankton (浮游生物) and is eaten by everything from plankton to whales.”

The new report calls for a focus on improving waste management systems in a handful of developing countries that account for the plastic leakage into the ocean. China, Indonesia, the Philippines, Thailand and Vietnam contribute more than half of the oceans’ plastic since their waste facilities haven’t kept up with rapid industrialization.

How can countries reduce the leakage of waste into the ocean? The Ocean Conservancy report suggests that by providing more waste collection services, closing the leakage points within the collection system, getting rid of waste with effective landfill, and building more recycling facilities, the plastics leakage could be cut by 50% by 2020.

It’s not just an environmentalist’s daydream. Coca-Cola and Dow Chemical, along with some other multinational companies, have joined forces with Ocean Conservancy to fight ocean pollution. “We’re committed to working toward a future of a plastic-free ocean. Companies don’t make plastic with the intention of it ending up in the ocean, and we acknowledge the strong role industry must play in order to help eliminate ocean plastic waste by 2035.” Says a Dow Chemical director.

“While building landfills and incinerators (焚化炉) across these developing countries might not be pretty, it’s far more environmentally friendly than letting waste slide into the world’s oceans.” Says Andreas Merkl.

32. Five developing countries are mostly responsible for plastic leakage because    .

A. there are too many factories in those countries

B. they produce the majority of the waste worldwide

C. their waste facilities fail to adapt to rapid industrialization

D. their citizens don’t make good use of waste management systems

33. The underlined word “eliminate” in Paragraph 5 means     .

A. End

B. increase

C. remain

D. reduce

34. From the last two paragraphs, we can learn that     .

A. many companies have begun to play a role in fighting ocean pollution

B. environment-friendly plastics will be invented by multinational factories

C. developing countries will be much more beautiful with a plastic-free ocean

D. landfills and incinerators have greatly reduced plastic leakage into the ocean

35. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

36. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

37. The main purpose of the passage is to     .

A. suggest countries learn more about oceanic waste

B. persuade companies to produce fewer plastic goods

C. warn people of the danger of using too many plastic items

The production of coffee beans is a huge，profitable business，but，unfortunately，full-sun production is taking over the industry and bringing about a lot of damage．The change in how coffee is grown from shade-grown production to full-sun production endangers the very existence of certain animals and birds and even disturbs the world's ecological balance．

    On a local level，the damage of the forest required by full-sun fields affects the area's birds and animals．The shade of the forest trees provides a home for birds and other species that depend on the trees' flowers and fruits．Full-sun coffee growers destroy this forest home．As a result，many species are quickly dying out．

    On a more global level，the destruction of the rainforest for full-sun coffee fields also threatens human life．Medical research often makes use of the forests'plant and animal life．and the destruction of such species could prevent researchers from fending cures for certain diseases．In addition，new coffee-growing techniques are poisoning the water locally，and eventually the world's groundwater．

    Both locally and globally，the continued spread of full-sun coffee plantations could mean the destruction of the rainforest ecology．The loss of shade trees is already causing a slight change in

the world's climate，and studies show that loss of oxygen-giving trees also leads to air pollution and global warming．Moreover，the new growing techniques are contributing to acidic(酸性的) soil conditions．

    It is obvious that the way much coffee is grown affects many aspects of life，from the local environment to the global ecology．But consumers do have a choice，They can purchase shade-grown coffee whenever possible，although at a higher cost．The future health of the planet and mankind is surely worth more than an inexpensive cup of coffee．

Title：Full-sun production does(71) ________ to humans
Introduction	Full-sun coffee production endangers the existence of certain species and (72) ________ the balance of world ecology．
	Species	Forest shade is home to birds and other species that are (74) ________ on the flowers and fruits of trees．Full-sun fields require to destroy forest，which results in the(75) ________ of some species．
Effects on different (73)________	Human life	Human life is(76) ________ as well because researchers may(77) ________ to find cures for certain diseases as the result of the destruction of species．
	Environment	Fewer oxygen-giving trees are left，(78) ________ in air pollution and global warming． ·The new coffee techniques poison water and cause acidic soil conditions．
Conclusion	Although shade-grown coffee is more (79) ________．it is worth our while．After all，it is the future health of the earth and humans that (80) ________

"Plastic bags are everywhere!Every day，we are handed countless plastic bags：when we go to grocery stores，clothing stores，book stores and restaurants．Yes，sometimes，they are  convenient，but most of the time，they are avoidable．A plastic bag is just not necessary for that apple you are about to eat or that soda you are going to drink right away．Consider these questions：
    Do I need to take as many plastic bags in supermarkets？
    Do I need a plastic bag for an item purchased that is already well packaged？
    Could I bring my own shopping bag when making purchases？
    Plastic bags are the cause of major environmental concerns．It is thought that an average person uses around 130 plastic bags per year．Using fewer plastic bags is a must in solving environmental problems．
Reasons why you should limit your use of plastic bags：
  1．Plastic bags account for a major part of our waste in landfills(垃圾填埋场) ．Plastic
    bags are light and hard to contain．Because of this，plastic bags fly easily in wind，float along in the currents of rivers and oceans，and get caught in trees and fences．
  2．Plastic bags are made from a non-renewable natural resource(资源)：oil．Therefore，this contributes to the disappearance of our natural resources．
  3．Countless plastic bags end up in our oceans and cause harm to our sea life．Many sea animals and birds mistakenly eat and choke on plastic or become tied up in plastic bags that are floating around．
  4．There are many better alternatives to plastic bags．Paper bags hold more than plastic bags．But the best alternative to using plastic bags is using cloth bags．

46．What's the main idea of the first paragraph？    
A．Plastic bags are uncontrollable
B．Plastic bags are unnecessary．
C．Plastic bags are inconvenient
D．Plastic bags are dangerous．
47．Which of the following is NOT the reason for limiting the use of plastic bags？    
A．They speed up the disappearance of oil
B．They threaten the lives of sea animals．
C．They do harm to trees and fences
D．They pollute the environment．
48．The best thing people can do to help solve the plastic bag problem is to    
A．stop making plastic bags from oil
B．use paper bags instead of plastic bags
C．bring their own cloth bags when shopping
D．pick up plastic bags found in rivers and oceans．"

代码

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