职称英语考试

【单选题】Questions 53 to 56 are based on the following passage:Following the end of theApollo space program, the National Geographic Society published anarticles about the moon. Here, in shorter form, are some questions and answers from one ofthese articles.Is the moon like the earth Yes and no. It is more like it than many scientists thought beforeApollo. Like the earth, the moon is inlayers, with a crust on the outside and a deep mantle below. It may also have a core, as the earth does.However, the crust is almost four times thicker than the earth’s crust. We do not know much yet about themoon’s mantle, that section of superheated rock which goes down hundreds of miles below the crust. Wethink~but we are not sure that the moon has a center core which includes molten rock,
A、s the earth does.In other ways, of course, the moon is very different. There is no life, and there is no water. The makeupof its atmosphere is very different; the earth creatures cannot breathe in it.Is the moon hot or cold Most scientists agree that some of the moon was hot for at 1east a time. Rocks from the moon show thatthey were once melteD、Right now there seems to be heat someplace inside the moon, possibly a great deal ofit. On the surface, however, there is no sign of heat -- no volcano, for example. The surface itself ranges fromheat of 230 F to cold of minus 290~F, depending upon where the sun is.Where did the moon come from We don’t know. The three main theories (ideas) are (1) that the moon was horn from the earth, (2) thatthe earth and the moon were born together at the same time from the same cloud of gas and dust, and (3) thatthe moon was born someplace else in the solar system and then captured by the earth’s gravity. So far, noneof these theories has been proved to be either fight or wrong. Professor George W. Wetherill of theUniversity ofCalifornia in LosAngeles says that he would give the first two -theories each a 10 percentchance and the third theory a 20 percent chance. The other 60 percent he would give to "things we haven’tthought of yet." Since earth creatures cannot breathe in the moon’s atmosphere, we can safely say that ____.
A、it is impossible for people to live on the moon
B．people would need special equipment in order to live on the moon
C．there is no way to grow food there
D．no one would want to live there

网考网参考答案：D
网考网解析：
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