Question

【题目】When the weather is hot, you go to a lake or an ocean. When you are near a lake or an ocean, you feel cool. Why? The sun makes the earth hot, but it cannot make the water hot. Though the air over the earth becomes hot, the air over the water stays cool. The hot air over the earth goes up, and then the cool air over the water moves in and takes the air near a lake or an ocean, you feel the cool air when it moves around you. You feel the wind and the wind makes you cool.

Of course, scientists cannot answer all of our 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 cool, it breaks, and rain falls into the cracks(裂缝). The rain then carries the salt into the earth and the rivers. The rivers carry the salt into the ocean. But then we ask “What happens to the salt in the ocean?” The ocean does not get saltier every year. Scientists are not sure about the answer to the question.

We have known a lot of things on the earth, but there is still a long way to go about the study of our world.

Judge the following sentence true (A) or false (B) according to what you read. (判断正A误B)

【1】Scientists can answer all our questions.

【2】Now scientists know what makes people feel cool near a lake or an ocean in summer.

【3】Scientists say that the salt in the ocean comes from rivers and lakes.

【4】A rock breaks when rain falls.

【5】Scientists are not sure about some questions because there are still many new things for them to

know.

Answer 1

【答案】

【1】B

【2】A

【3】B

【4】B

【5】A

【解析】

试题分析：这篇文章讲述了科学家能够回答一些问题，但并不能回答所有问题。我们知道为什么夏天的海边和湖边会感觉凉快，知道海里的盐来自哪里，但是科学家们也不确定海里的盐会怎么样。还有很多的问题等着我们去解决。

【1】B推理判断题。根据文章内容Of course, scientists cannot answer all of our questions.当然，科学家不可能回答所有的问题，故此题错误。

【2】A推理判断题。根据文章第一段得知，我们知道为什么夏天的海边和湖边会感觉凉快，故此题正确。

【3】B推理判断题。根据文章内容scientists will say that the salt comes from rocks.科学家们会说盐来自岩石，故此题错误。

【4】B推理判断题。根据文章内容When a rock gets very hot or very cool, it breaks,当岩石变得很冷或很热时，它就破了，故此题错误。

【5】A推理判断题。根据文章内容there is still a long way to go about the study of our world.要去了解我们的世界还有很长一段路要走，所以这道题是正确的。