III．阅读理解（满分50分）
　　阅读下面短文，从每题所给的A、B、C和D项中选出最佳选项，并在答题卡上将该项涂黑。
A
Against the supposition that forest fires in Alaska, Canada and Siberia warm the climate, scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sunlight into space.
This finding suggests that taking steps to prevent northern forest fires to limit the release of greenhouse gases may warm the climate in northern regions. Usually large fires destroyed forests in these areas over the past decade. Scientists predict that with climate warming, fires may occur more frequently over the next several centuries as a result of a longer fire season. Sunlight taken in by the earth tends to cause warming, while heat mirrored back into space tends to cause cooling.
This is the first study to analyze all aspects of how northern fires influence climate. Earlier studies by other scientists have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat.
Scientists found that right after the fire, large amounts of greenhouse gases entered the atmosphere and caused warming. Ozone（臭氧） levels increased, and ash from the fire fell on far-off sea ice, darkening the surface and causing more radiation from the sun to be taken in. The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees covered the ground. Snow on the ground mirrored more sunlight back into space, leading to cooling.
“We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere.” Scientists tracked the change in the amount of radiation entering and leaving the climate system as a result of the fire, and found a measurement closely related to the global air temperature. Typically, fire in northern regions occurs in the same area every 80 to 150 years. Scientists, however, found that when fire occurs more frequently, more radiation is lost from the earth and cooling results. Specifically, they determined when fire returns 20 years earlier than predicted, 0.5 watts per square meter of area burned are soaked up by the earth from greenhouse gases, but 0.9 watts per square meter will be sent back into space. The net effect is cooling. Watts are used to measure the rate at which energy is gained or lost from the earth.
41. According to the new findings, taking steps to prevent northern forest fires may __________.
A. result in a warming climate          
B. cause the forest fires to occur more frequently
C. lead to a longer fire season            
D. protect the forests and the environment there
42. The following are all the immediate effects after a forest fire EXCEPT __________.
A. large amounts of greenhouse gases enter the atmosphere
B. the levels of ozone which is a type of oxygen increase
C. snow on the ground mirrors more sunlight back into space
D. ashes from the fire fall on the ice surface and take in more radiation from the sun
43. Earlier studies about northern forest fires __________.
A. analyze all aspects of how northern fires influence climate
B. indicate that forest fires will pollute the atmosphere
C. suggest that people should take measures to protect environment
D. suggest that the fires will speed up climate warming
44.The underlined phrase “soak up” in the last paragraph most probably means __________.
A. released         B. absorbed       C. created      D. distributed
45. From the passage we can draw a conclusion that forest fires in Alaska, Canada and Siberia may __________.
A. warm the climate as the supposition goes
B. allow more snow to reflect more sunlight into space and thus cool the climate
C. destroy large areas of forests and pollute the far-off sea ice
D. help to gain more energy rather than release more energy

III．阅读理解 （满分50分）

　　阅读下面短文，从每题所给的A、B、C和D项中选出最佳选项，并在答题卡上将该项涂黑。

Against the supposition that forest fires in Alaska, Canada and Siberia warm the climate, scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sunlight into space.

    This finding suggests that taking steps to prevent northern forest fires to limit the release of greenhouse gases may warm the climate in northern regions. Usually large fires destroyed forests in these areas over the past decade. Scientists predict that with climate warming, fires may occur more frequently over the next several centuries as a result of a longer fire season. Sunlight taken in by the earth tends to cause warming, while heat mirrored back into space tends to cause cooling.

    This is the first study to analyze all aspects of how northern fires influence climate. Earlier studies by other scientists have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat.

    Scientists found that right after the fire, large amounts of greenhouse gases entered the atmosphere and caused warming. Ozone（臭氧） levels increased, and ash from the fire fell on far-off sea ice, darkening the surface and causing more radiation from the sun to be taken in. The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees covered the ground. Snow on the ground mirrored more sunlight back into space, leading to cooling.

    “We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere.” Scientists tracked the change in the amount of radiation entering and leaving the climate system as a result of the fire, and found a measurement closely related to the global air temperature. Typically, fire in northern regions occurs in the same area every 80 to 150 years. Scientists, however, found that when fire occurs more frequently, more radiation is lost from the earth and cooling results. Specifically, they determined when fire returns 20 years earlier than predicted, 0.5 watts per square meter of area burned are soaked up by the earth from greenhouse gases, but 0.9 watts per square meter will be sent back into space. The net effect is cooling. Watts are used to measure the rate at which energy is gained or lost from the earth.

41. According to the new findings, taking steps to prevent northern forest fires may __________.

A. result in a warming climate          

B. cause the forest fires to occur more frequently

C. lead to a longer fire season            

D. protect the forests and the environment there

42. The following are all the immediate effects after a forest fire EXCEPT __________.

A. large amounts of greenhouse gases enter the atmosphere

B. the levels of ozone which is a type of oxygen increase

C. snow on the ground mirrors more sunlight back into space

D. ashes from the fire fall on the ice surface and take in more radiation from the sun

43. Earlier studies about northern forest fires __________.

A. analyze all aspects of how northern fires influence climate

B. indicate that forest fires will pollute the atmosphere

C. suggest that people should take measures to protect environment

D. suggest that the fires will speed up climate warming

44.The underlined phrase “soak up” in the last paragraph most probably means __________.

A. released         B. absorbed       C. created      D. distributed

45. From the passage we can draw a conclusion that forest fires in Alaska, Canada and Siberia may __________.

A. warm the climate as the supposition goes

B. allow more snow to reflect more sunlight into space and thus cool the climate

C. destroy large areas of forests and pollute the far-off sea ice

D. help to gain more energy rather than release more energy

III．阅读理解 （满分50分）

　　阅读下面短文，从每题所给的A、B、C和D项中选出最佳选项，并在答题卡上将该项涂黑。

A

Against the supposition that forest fires in Alaska, Canada and Siberia warm the climate, scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sunlight into space.

    This finding suggests that taking steps to prevent northern forest fires to limit the release of greenhouse gases may warm the climate in northern regions. Usually large fires destroyed forests in these areas over the past decade. Scientists predict that with climate warming, fires may occur more frequently over the next several centuries as a result of a longer fire season. Sunlight taken in by the earth tends to cause warming, while heat mirrored back into space tends to cause cooling.

    This is the first study to analyze all aspects of how northern fires influence climate. Earlier studies by other scientists have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat.

    Scientists found that right after the fire, large amounts of greenhouse gases entered the atmosphere and caused warming. Ozone（臭氧） levels increased, and ash from the fire fell on far-off sea ice, darkening the surface and causing more radiation from the sun to be taken in. The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees covered the ground. Snow on the ground mirrored more sunlight back into space, leading to cooling.

    “We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere.” Scientists tracked the change in the amount of radiation entering and leaving the climate system as a result of the fire, and found a measurement closely related to the global air temperature. Typically, fire in northern regions occurs in the same area every 80 to 150 years. Scientists, however, found that when fire occurs more frequently, more radiation is lost from the earth and cooling results. Specifically, they determined when fire returns 20 years earlier than predicted, 0.5 watts per square meter of area burned are soaked up by the earth from greenhouse gases, but 0.9 watts per square meter will be sent back into space. The net effect is cooling. Watts are used to measure the rate at which energy is gained or lost from the earth.

41. According to the new findings, taking steps to prevent northern forest fires may __________.

A. result in a warming climate          

B. cause the forest fires to occur more frequently

C. lead to a longer fire season            

D. protect the forests and the environment there

42. The following are all the immediate effects after a forest fire EXCEPT __________.

A. large amounts of greenhouse gases enter the atmosphere

B. the levels of ozone which is a type of oxygen increase

C. snow on the ground mirrors more sunlight back into space

D. ashes from the fire fall on the ice surface and take in more radiation from the sun

43. Earlier studies about northern forest fires __________.

A. analyze all aspects of how northern fires influence climate

B. indicate that forest fires will pollute the atmosphere

C. suggest that people should take measures to protect environment

D. suggest that the fires will speed up climate warming

44.The underlined phrase “soak up” in the last paragraph most probably means __________.

A. released         B. absorbed       C. created      D. distributed

45. From the passage we can draw a conclusion that forest fires in Alaska, Canada and Siberia may __________.

A. warm the climate as the supposition goes

B. allow more snow to reflect more sunlight into space and thus cool the climate

C. destroy large areas of forests and pollute the far-off sea ice

D. help to gain more energy rather than release more energy

第三部分阅读理解（共20小题；每小题2分，满分40分）

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

As many as 20% of all children in the United States suffer from some form of the learning disorder called dyslexia（读写困难症）.

Experts on dyslexia say that the problem is not a disease． They say that persons with dyslexia use information in a different way. One of the world's great thinkers and scientists Albert Einstein was dyslexic． Einstein said that he never thought in words the way that most people do. He said that he thought in pictures instead. The American inventor Thomas Edison was also dyslexia. Dyslexia first was recognized in Europe and the United States more than 80 years ago. Many years passed before doctors discovered that persons with the disorder were not mentally slow or disabled. The doctors found that the brains of persons with dyslexia are different, In most people, the left side of the brain — the part that controls language — is larger than the right side. In persons with dyslexia, the right side of the brain is bigger. Doctors are not sure what causes this difference. However, a research has shown that dyslexia is more common in males than in females, and it is found more often in persons who are left-handed.

No one knows the cause of dyslexia, but some scientists believe that it may result from chemical changes in a baby's body long before it is born. They are trying to find ways to teach persons with dyslexia． Dyslexia persons think differently and need special kinds of teaching help. After they have solved their problems with language, they often show themselves to be especially intelligent or creative.

1．Einstein and Edison are spoken of in the passage to prove that ________.

A．they suffered from dyslexia

B．they succeeded because of dyslexia

C．they are neither slow in thinking nor disabled

D．dyslexia is not a disease

2．Who is the most unlikely to suffer from dyslexia?

A．Left-handed persons .      B．Inventors.

C．Females.       D．Males.

3．Which of the following is NOT true according to the text?

A．Once persons with dyslexia have their language problems solved, they will be intelligent

and creative.

B．The left brain of the person with dyslexia is larger than the right side of brain .

C．People have no idea of the cause of dyslexia .

D．Experts think the cause of dyslexia may be related to chemical changes in baby's body long  before its birth.

4．The passage mainly talk about ______.

A．some form of the learning disorder       B．a serious disease

C．the intelligence of the great people .      D．the teaching help to persons with dyslexia.

5．The persons with dyslexia ________.

A．are some kinds of sick persons      B．are mentally slow

C．think differently from common people D．are all males

第三部分 阅读理解（共20小题；每小题2分，满分40分）

       阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

       As many as 20% of all children in the United States suffer from some form of the learning disorder called dyslexia（读写困难症）.

Experts on dyslexia say that the problem is not a disease． They say that persons with dyslexia use information in a different way. One of the world's great thinkers and scientists Albert Einstein was dyslexic． Einstein said that he never thought in words the way that most people do. He said that he thought in pictures instead. The American inventor Thomas Edison was also dyslexia. Dyslexia first was recognized in Europe and the United States more than 80 years ago. Many years passed before doctors discovered that persons with the disorder were not mentally slow or disabled. The doctors found that the brains of persons with dyslexia are different, In most people, the left side of the brain — the part that controls language — is larger than the right side. In persons with dyslexia, the right side of the brain is bigger. Doctors are not sure what causes this difference. However, a research has shown that dyslexia is more common in males than in females, and it is found more often in persons who are left-handed.

No one knows the cause of dyslexia, but some scientists believe that it may result from chemical changes in a baby's body long before it is born. They are trying to find ways to teach persons with dyslexia． Dyslexia persons think differently and need special kinds of teaching help. After they have solved their problems with language, they often show themselves to be especially intelligent or creative.

1．Einstein and Edison are spoken of in the passage to prove that ________.

       A．they suffered from dyslexia

       B．they succeeded because of dyslexia

       C．they are neither slow in thinking nor disabled

       D．dyslexia is not a disease

2．Who is the most unlikely to suffer from dyslexia?

       A．Left-handed persons .      B．Inventors.

       C．Females.        D．Males.

3．Which of the following is NOT true according to the text?

       A．Once persons with dyslexia have their language problems solved, they will be intelligent

and creative.

       B．The left brain of the person with dyslexia is larger than the right side of brain .

       C．People have no idea of the cause of dyslexia .

       D．Experts think the cause of dyslexia may be related to chemical changes in baby's body long  before its birth.

4．The passage mainly talk about ______.

       A．some form of the learning disorder       B．a serious disease

       C．the intelligence of the great people .      D．the teaching help to persons with dyslexia.

5．The persons with dyslexia ________.

       A．are some kinds of sick persons      B．are mentally slow

       C．think differently from common people D．are all males