题目信息
Scientist: A greenhouse gas, for example, carbon dioxide, forms a transparent layer that traps solar heat beneath it in the earth's atmosphere. Atmospheric levels of carbon dioxide are currently increasing, causing the climate to warm—an effect that is predicted by at least one computer model of the greenhouse effect. But the warming that has occurred is a great deal less than what would be expected based on the model. Therefore, _______.

Which of the following most logically completes the scientist's argument?
A:better measurements of atmospheric levels of carbon dioxide are needed
B:the definition of “greenhouse gas” should probably be reconsidered
C:there are factors besides the increase in greenhouse-gas emissions contributing to the warming of the climate
D:the computer model of the greenhouse effect must be incorrect in some respect
E:the likely consequences of any warming of the climate are unlikely to be much less damaging than predicted
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正确答案: D:the computer model of the greenhouse effect must be incorrect in some respect
答案D
题目类型:填空补充题
题目大意:科学家说,一种温室气体,例如二氧化碳形成了一个透明层,该层将太阳热捕获在地球大气下。 目前,大气中二氧化碳的含量正在增加,导致气候变暖,这种影响至少可以通过一种温室效应计算机模型来预测。 但是,已经发生的变暖比基于模型的预期要少得多。 因此,_______。
题目逻辑:需选出能够承接计算机模型变化的选项,可以是对模型不准确的解释,模型不准确的原因或者其他,
A.模型有问题,不一定是因为大气中的二氧化碳水平测量不准,该选项不是很好。
B.模型有问题,不一定是因为温室气体定义不准,该选项不是很好。
C.引出其他因素,未解释模型预测值,错误。
D.指出模型存在问题,这和题目逻辑相对照,正确。
E.本题不讨论气候变暖的课后后果,错误。
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