【題目】用括號中所給英文單詞的適當形式填空或根據(jù)漢語提示寫出英語單詞(注意形式變化),完成各小題(每空不超過兩詞).并將答案用0.5毫米黑色簽字筆填入答題卡相應的位置上.

Scientists think that there has been life on earth for 【1】 (million) of years. However,we haven't found life on other planets yet. The earth is a planet and it 【2】 (go) around the sun. And there are seven other planets 【3】 (請?zhí)钋‘數(shù)年P(guān)系代詞/引導詞) also go around the sun. The sun and its planets 【4】 (call) the solar system. The solar system is a small part of the universe.

Scientists have launched many spaceships 【5】 (explore) other planets in the solar system. Some spaceships 【6】 (去) beyond the solar system. However,no one 【7】 (discover) any life in space yet.

Why has no one from other planets 【8】 (send) us a message? Have they tried to send information 【9】(給) us? With so many stars in space,are we 【10】 (孤單),or is there life on other planets in space?

【答案】

【1】millions

【2】goes

【3】that

【4】are called

【5】to explore

【6】have gone

【7】has discovered

【8】sent

【9】to

【10】alone

【解析】

文章大意：本文主要是介紹了我們的地球和太空，提出了是否別的星球會存在生命的疑問。

【1】句意：科學家認為地球上已經(jīng)有生命數(shù)百萬年了。

根據(jù)空后詞of的提示，空處的詞應為數(shù)詞million的復數(shù)形式millions和of 一起構(gòu)成短語“millions of數(shù)百萬”，故答案為millions。

【2】句意：地球是行星，它圍著太陽旋轉(zhuǎn)。

根據(jù)句意可知，句子時態(tài)是一般現(xiàn)在時，主語it是第三人稱單數(shù)，所以行為動詞go后要加es，故答案為goes。

【3】句意：有也圍著太陽旋轉(zhuǎn)的其他的七個行星。

根據(jù)句意可知，空處的詞是定語從句的引導詞，先行詞是planets，是物，并且在定語從句中做主語，所以用 that來引導，故答案為that。

【4】句意：太陽和它的行星被叫做太陽系。

根據(jù)句意可知，句子是一般現(xiàn)在時的被動語態(tài)，其構(gòu)成形式為be+ done，故答案為are called。

【5】句意：科學家已經(jīng)發(fā)射了許多宇宙飛船來探索太陽系的其他行星。

根據(jù)句意可知，空處是動詞不定式作目的狀語，故答案為to explore。

【6】句意：一些宇宙飛船已經(jīng)超越了太陽系。

根據(jù)句意可知，句子是現(xiàn)在完成時，其構(gòu)成形式為have /has+ done，主語為Some spaceships，復數(shù)形式，所以助動詞用have，結(jié)合漢語提示，故答案為have gone。

【7】句意：然而還沒有人在太空發(fā)現(xiàn)生命。

根據(jù)句意可知，句子是現(xiàn)在完成時，其構(gòu)成形式為have /has+ done，主語為no one，單數(shù)形式，所以助動詞用has，故答案為has discovered。

【8】句意：為什么沒有其他行星的人給我們發(fā)信息呢？

根據(jù)句中has的提示，句子應為現(xiàn)在完成時，其構(gòu)成形式為have /has+ done，send的過去分詞sent，故答案為sent。

【9】句意：他們已經(jīng)努力給我們發(fā)信息了嗎？

根據(jù)漢語提示，空處的詞應介詞to，構(gòu)成動詞短語send…to…發(fā)送給，故答案為to。

【10】句意：在太空有這么多恒星，我們孤獨嗎，或者在太空其他的行星上有生命嗎？

空處的詞在系動詞are之后，應是形容詞，結(jié)合漢語提示，故答案為alone。

基數(shù)詞ten，hundred，thousand，million，billion的基本用法：1.當這些詞與具體數(shù)字連用時，習慣用單數(shù)，而且不接介詞of。例如：There are four thousand students in our school. 2.當這些詞不與具體數(shù)字連用，而是表示不確定的泛指數(shù)時，不僅要用復數(shù)，而且后要接of。例如：The boy has hundreds of books on his bookshelf. 本題中第一小題就是考查millions of結(jié)構(gòu)。

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