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A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below l6℃.Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate.Without the forest cover,these areas would reflect more heat into the atmosphere,warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns,potentially causing certain natural disasters all over the world.

    In the past hundred years,humans have begun destroying rainforests in search of three major resources(资源): land for crops,wood for paper and other products,land for raising farm animals.This action affects the environment as a whole.For example,a lot of carbon dioxide(二氧化碳) in the air comes from burning the rainforests.People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.

    There are two main reasons for this.Firstly,when people cut down trees,generally they can only use the land for a year or two.Secondly,cutting large sections of rainforests may provide a good supply of wood right now,but in the long run it actually reduces the world’s wood supply.

    Rainforests are often called the world’s drug store.More than 25% of the medicines we use today come from plants in rainforests.However,fewer than l%of rainforest plants have been examined for their medical value.It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests.

Rainforests can help to adjust the climate because they                

  A.reflect more heat into the atmosphere

  B.bring about high rainfall throughout the world

  C.rarely cause the temperature to drop lower than l6℃

  D.reduce the effect of heat from the sun on the earth

What does the word “this” underlined in the third paragraph refer to? 

  A.We will lose much more than we can gain.

  B.Humans have begun destroying rainforests.

  C.People have a strong desire for resources.

  D.Much carbon dioxide comes from burning rainforests.

It can be inferred from the text that      

  A.we can get enough resources without rainforests

  B.there is great medicine potential in rainforests

  C.we will grow fewer kinds of crops in the gained land

  D.the level of annual rainfall affects wind patterns

What might be the best title for the text? 

   A.How to Save Rainforests                B.How to Protect Nature

   C.Rainforests and the Environment        D.Rainforests and Medical Development

【小题1】D

【小题2】A

【小题3】B

【小题4】C


解析:

【小题1】因果判断题。由文章第一段内容可以得出答案。

【小题2】由上下文内容可知,A项是正确的。

【小题3】推测判断题。由文章最后一段内容即可得出答案。

【小题4】主旨大意题。整篇文章主要论述了热带雨林的重要作用以及砍热带雨林对环境所造成的影响。

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  Imagine yourself on a boat looking out at the horizon and all you can see is the water meeting the sky with no land in sight and you are sailing straight ahead to meet the world. Jesse Martin does not have to imagine: he is living in it.

On Dec. 7, 1998, at 17 years old, Jesse set sail from Melbourne, Australia on his boat, attempting to become the youngest person to sail alone and nonstop around the world. He sailed south of New Zealand, through the South Pacific, around South America, north on the Atlantic, back south past Africa, through the Indian Ocean and back to Melbourne.

Even as a young child, Jesse had been an adventurer who traveled all over Europe and Asia with his parents. Born in Munich, Germany in 1981, he moved to Australia with his family when he was only two years old. They moved close to a rainforest in Cow Bay, about 3500kms north of Melbourne, where they built a small house with no electricity or running water. Jesse grew up at the beach enjoying the outdoors to its fullest.

At 14, he sailed for the first time with his father and brother, Beau. It was after this trip that he began to dream about sailing around the world.

Jesse’s family played an important role. “I was made to believe I could do anything.” he says. Although, he says, there were others that were not so encouraging or supportive, “People that I looked up to, respected and trusted told me I couldn’t. Thankfully, I trusted myself. There were people that said that the boat couldn’t be ready by the time I had to leave.” However, through perseverance and belief in himself he was able to do what many told him was impossible.

On Oct.31, 1999, more than 10 months after he set sail, Jesse Martin went down in history as the youngest person to sail around the world alone, nonstop and unassisted.

What’s the author’s purpose in encouraging the reader to imagine a sailing experience?

    A. To show how difficult it is to be a sailor.

    B. To show how wonderful Jesse’s sailing is.

    C. To describe what Jesse’s sailing is like.

    D. To describe what a sailor’s life is like.

Jesse Martin was at the end of his voyage when he _______.

A. sailed on the South Pacific.

B. sailed on the Indian Ocean.

C. sailed past Africa

D. sailed past South America.

Which of the following made Jesse decide to sail alone around the world?

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   B. His journeys to Europe.

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   D. His love for outdoor activities.

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A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below l6℃. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover,these areas would reflect more heat into the atmosphere,warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns,potentially causing certain natural disasters all over the world.
In the past hundred years,humans have begun destroying rainforests in search of three major resources(资源):land for crops,wood for paper and other products,land for raising farm animals. This action affects the environment as a whole. For example,a lot of carbon dioxide in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.
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Rainforests are often called the world’s drug store. More than 25% of the medicines we use today come from plants in rainforests. However,fewer than l%of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests.
【小题1】Rainforests can help to adjust the climate because they      .

A.reflect more heat into the atmosphere
B.bring about high rainfall throughout the world
C.rarely cause the temperature to drop lower than l6℃
D.reduce the effect of heat from the sun on the earth
【小题2】What does the word “this” underlined in the third paragraph refer to?
A.We will lose much more than we can gain.
B.Humans have begun destroying rainforests.
C.People have a strong desire for resources.
D.Much carbon dioxide comes from burning rainforests.
【小题3】It can be inferred from the text that      .
A.we can get enough resources without rainforests
B.there is great medicine potential in rainforests
C.we will grow fewer kinds of crops in the gained land
D.the level of annual rainfall affects wind patterns
【小题4】Which of the following statements is TRUE?
A.Losing the rainforests has caused natural disasters all over the world.
B.Cutting rainforests will help increase the world’s wood supply in the future.
C.Rainforests can’t provide medical cures for diseases at all
D.Rainforests helps to control the temperature and adjust climate for humans.
【小题5】What might be the best title for the text?
A.How to Save Rainforests
B.How to Protect Nature
C.Rainforests and the Environment
D.Rainforests and Medical Development

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1.Rainforests can help to adjust the climate because they      .

A.reflect more heat into the atmosphere

B.bring about high rainfall throughout the world

C.rarely cause the temperature to drop lower than l6℃

D.reduce the effect of heat from the sun on the earth

2.What does the word “this” underlined in the third paragraph refer to?

A.We will lose much more than we can gain.

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D.Much carbon dioxide comes from burning rainforests.

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C.we will grow fewer kinds of crops in the gained land

D.the level of annual rainfall affects wind patterns

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B.Cutting rainforests will help increase the world’s wood supply in the future.

C.Rainforests can’t provide medical cures for diseases at all

D.Rainforests helps to control the temperature and adjust climate for humans.

5.What might be the best title for the text?

A.How to Save Rainforests

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D.Much carbon dioxide comes from burning rainforests.

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B.there is great medicine potential in rainforests

C.we will grow fewer kinds of crops in the gained land

D.the level of annual rainfall affects wind patterns

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At 14, he sailed for the first time with his father and brother, Beau. It was after this trip that he began to dream about sailing around the world.

Jesse’s family played an important role. “I was made to believe I could do anything.” he says. Although, he says, there were others that were not so encouraging or supportive, “People that I looked up to, respected and trusted told me I couldn’t. Thankfully, I trusted myself. There were people that said that the boat couldn’t be ready by the time I had to leave.” However, through perseverance and belief in himself he was able to do what many told him was impossible.

On Oct.31, 1999, more than 10 months after he set sail, Jesse Martin went down in history as the youngest person to sail around the world alone, nonstop and unassisted.

1. What’s the author’s purpose in encouraging the reader to imagine a sailing experience?

A.To show how difficult it is to be a sailor.

B.To show how wonderful Jesse’s sailing is.

C.To describe what Jesse’s sailing is like.

D.To describe what a sailor’s life is like.

2. Jesse Martin was at the end of his voyage when he _______.

A.sailed on the South Pacific.

B.sailed on the Indian Ocean.

C.sailed past Africa

D.sailed past South America.

3. Which of the following made Jesse decide to sail alone around the world?

A.His childhood adventure experiences.

B.His journeys to Europe.

C.His first sailing trip with his family.

D.His love for outdoor activities.

4. What can we learn from Jesse Martin’s story?

A.Interest leads to success.

B.A strong belief will make a person stronger.

C.Life is an unusual adventure we should enjoy.

D.Failure is the mother of success.

 

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