2. 考研
  3. When you are near a lake or a river, you feel cool. Why? The sun makes the earth hot, but it can’t make the water very hot. Alth

When you are near a lake or a river, you feel cool. Why? The sun makes the earth hot, but it can’t make the water very hot. Alth

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问题     When you are near a lake or a river, you feel cool. Why? The sun makes the earth hot, but it can’t make the water very hot. Although the air over the earth becomes hot, the air over the water stays cool. The hot air over the earth rises. Then the cool air over the water moves in and takes the place of the hot air. Then you feel the cool air and the wind, which makes you cool.
    Of course, scientists can’t answer all of your questions. If we ask, "Why is the ocean full of salt?" scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into the cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask, "What happens to the salt in the ocean? The ocean doesn’t get more slat every year." Scientists are not sure about the answer to this question.
    We know a lot about our world. But there are still many answers that we do not have, and we are curious.  
Now scientists know______.
选项 A、what makes people feel cool near a lake or a river in summer
B、everything about the ocean
C、why the ocean does not get more and more salty
D、what happens to the salt in the ocean
答案A
解析 本题的依据是整个第一段的内容。B项说法过于绝对，与现实不符；C和D项为错误信息，被第二段的最后两句话所否定。
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本试题收录于： GCT工程硕士（英语）题库专业硕士分类
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