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新GRE考试非常人性的一点，对于考题出的很严格，经过多次锤炼之后，能考验出考生们的水平。考生们可以根据题库的题目复习新GRE考试，下面就将新GRE阅读理解真题进行解析，为考生们彻底分析在GRE阅读中出现的真题，帮助考生们复习。
15. 云和气候变化预测
As of the late 1980s, neither theorists nor large-scale computer climate models could accurately predict whether cloud systems would help or hurt a warming globe. Some studies suggested that a four percent increase in stratocumulus clouds over the ocean could compensate for a doubling in atmospheric carbon dioxide, preventing a potentially disastrous planetwide temperature increase. On the other hand, an increase in cirrus clouds could increase global warming.
That clouds represented the weakest element in climate models was illustrated by a study of fourteen such models. Comparing climate forecasts for a world with double the current amount of carbon dioxide, researchers found that the models agreed quite well if clouds were not included. But when clouds were incorporated, a wide range of forecasts was produced. With such discrepancies plaguing the models, scientists could not easily predict how quickly the worlds climate would change, nor could they tell which regions would face dustier droughts or deadlier monsoons.
15.1. The author of the passage is primarily concerned with
confirming a theory
supporting a statement
presenting new information
predicting future discoveries
reconciling discrepant findings
15.2. It can be inferred that one reason the fourteen models described in the passage failed to agree was that
they failed to incorporate the most up-to-date information about the effect of clouds on climate
they were based on faulty information about factors other than clouds that affect climate
they were based on different assumptions about the overall effects of clouds on climate
their originators disagreed about the kinds of forecasts the models should provide
their originators disagreed about the factors other than clouds that should be included in the models
15.3. It can be inferred that the primary purpose of the models included in the study discussed in the second paragraph of the passage was to
predict future changes in the worlds climate
predict the effects of cloud systems on the worlds climate
find a way to prevent a disastrous planetwide temperature increase
assess the percentage of the Earths surface covered by cloud systems
estimate by how much the amount of carbon dioxide in the Earths atmosphere will increase
15.4. The information in the passage suggests that scientists would have to answer which of the following questions in order to predict the effect of clouds on the warming of the globe?
What kinds of cloud systems will form over the Earth?
How can cloud systems be encouraged to form over the ocean?
What are the causes of the projected planetwide temperature increase?
What proportion of cloud systems are currently composed of cirrus of clouds?
What proportion of the clouds in the atmosphere form over land masses?
新GRE考试非常人性的一点，对于考题出的很严格，经过多次锤炼之后，能考验出考生们的水平。考生们可以根据题库的题目复习新GRE考试，下面就将新GRE阅读理解真题进行解析，为考生们彻底分析在GRE阅读中出现的真题，帮助考生们复习。
15. 云和气候变化预测
As of the late 1980s, neither theorists nor large-scale computer climate models could accurately predict whether cloud systems would help or hurt a warming globe. Some studies suggested that a four percent increase in stratocumulus clouds over the ocean could compensate for a doubling in atmospheric carbon dioxide, preventing a potentially disastrous planetwide temperature increase. On the other hand, an increase in cirrus clouds could increase global warming.
That clouds represented the weakest element in climate models was illustrated by a study of fourteen such models. Comparing climate forecasts for a world with double the current amount of carbon dioxide, researchers found that the models agreed quite well if clouds were not included. But when clouds were incorporated, a wide range of forecasts was produced. With such discrepancies plaguing the models, scientists could not easily predict how quickly the worlds climate would change, nor could they tell which regions would face dustier droughts or deadlier monsoons.
15.1. The author of the passage is primarily concerned with
confirming a theory
supporting a statement
presenting new information
predicting future discoveries
reconciling discrepant findings
15.2. It can be inferred that one reason the fourteen models described in the passage failed to agree was that
they failed to incorporate the most up-to-date information about the effect of clouds on climate
they were based on faulty information about factors other than clouds that affect climate
they were based on different assumptions about the overall effects of clouds on climate
their originators disagreed about the kinds of forecasts the models should provide
their originators disagreed about the factors other than clouds that should be included in the models
15.3. It can be inferred that the primary purpose of the models included in the study discussed in the second paragraph of the passage was to
predict future changes in the worlds climate
predict the effects of cloud systems on the worlds climate
find a way to prevent a disastrous planetwide temperature increase
assess the percentage of the Earths surface covered by cloud systems
estimate by how much the amount of carbon dioxide in the Earths atmosphere will increase
15.4. The information in the passage suggests that scientists would have to answer which of the following questions in order to predict the effect of clouds on the warming of the globe?
What kinds of cloud systems will form over the Earth?
How can cloud systems be encouraged to form over the ocean?
What are the causes of the projected planetwide temperature increase?
What proportion of cloud systems are currently composed of cirrus of clouds?
What proportion of the clouds in the atmosphere form over land masses?
