It can be inferred from the second paragraph that A.low-altitude clouds are the main causes of global warming. B.increase of cloud cover can slow down the climate change. C.global warming will increase cloud cover. D.increase of cloud cover can speed up the global warming.
A.low-altitude B. B.increase C. C.global D. D.increase E.
【参考答案】
B 推理判断题。根据题干提示定位至第二段。该段末句提及“增加云层覆盖,这样的话会使气候变化速度放慢”,[B]与之相符,故为正确。同理排除含义相反的[D];由第二段第二句可知,低海拔的云有助于给地球降温,故排除[A];第二段第三句指出地球变暖是否会增加或减少云层还不确定,故排除[C]。