题目内容
Scientists think that there has been life for__31_ of years. However we haven’t found life on other planets _32_ . The earth is a planet and it _33__ around the sun. Seven other planets also go _34_ the sun. The sun and its planets are __35 the solar system. The solar system is a small part of our galaxy.
Scientists __36_ lots of spacecraft to look at other planets in the solar system, and some spacecraft have gone __37_ the solar system. However, no one __38_ any life in space yet.
But why has no one from other planets sent us a message ? Have they tried to send _39_ to us ? _40_so many stars in the universe, are we alone, or is there life out there in space ? We don’t know.
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【小题2】 |
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【小题3】 |
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【小题5】 |
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【小题6】 |
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【小题7】 |
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【小题10】 |
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【小题1】B
【小题2】C
【小题3】D
【小题4】C
【小题5】A
【小题6】C
【小题7】B
【小题8】C
【小题9】C
【小题10】A
解析【小题1】根据后文内容可知答案为Where’s your mother?,故选答案为B
【小题2】yet 表示否定句中的也,故选答案为C
【小题3】因为it 作为主语,谓语动词用动词,故选答案为D
【小题4】根据前文的内容可知答案为go around,表示围着···转,故选答案为C
【小题5】根据文章内容可知答案为被人叫做,故选答案为A
【小题6】根据上下文的内容可知答案为C
【小题7】根据上下文的内容,可知答案为B
【小题8】no one作为主语时,相当于适当形式,故选答案为C
【小题9】information为不可数名词,故选答案为C
【小题10】with···表示在···情况下,故选答案为A
根据句意,选用方框内所给词的适当形式填空。
east sixty health know discuss |
1. After a ____________, both sides reached a final agreement.
2. Japan is to the ____________ part of China.
3. To live ____________, you should change your lifestyle and diets.
4. Scientists are always trying to discover the ___________ world to human beings.
5. Audrey Hepburn, who died in her __________, devoted all her life to charity.