【題目】閱讀下面短文，按照句子結(jié)構(gòu)的語法性和上下文連貫的要求，在空格處填入一個(gè)適當(dāng)?shù)脑~或使用括號中詞語的正確形式填空，并將答案填寫在答題卡標(biāo)號為1-10的相應(yīng)位置上。

If the population of the Earth keeps on increasing at its present rate, there will eventually not be enough resources【1】________(leave) to support life on the planet. By the middle of the 21st century, if present trends continue, we 【2】_________（use）up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on the earth will make 【3】_____ necessary for us to look for open space somewhere else. But 【4】_____ of the other planets in our solar system are capable of supporting life at present. One possible solution 【5】______ the problem, 【6】_________, has recently been suggested by an American scientist, Professor Carl Sagan. Sagan believes【7】_______ before the Earth’s resources are 【8】_________(complete) exhausted it will be possible to change the atmosphere of Venus and therefore create a new world almost as large as the Earth【9】 .The difficulty is that Venus is much hotter than the Earth. 【10】_________, there is only a tiny amount of water there.

【答案】

【1】left

【2】will have used

【3】it

【4】none

【5】to

【6】however

【7】that

【8】completely

【9】itself

【10】Besides/Moreover/Furthermore.

【解析】

試題分析：文章大意：如果地球上的人口仍以當(dāng)前的增長率增長的話，最終地球上將沒有足夠的資源供給生命生長。面對人口急劇地增長，資源日益地短缺的困境，可能的途徑就是其他星球?qū)ふ铱臻g，比如金星。

【1】left.考查非謂語動詞，leave與resources是動賓關(guān)系，應(yīng)用leave的過去分詞形式left做后置定語。

【2】will have used.考查將來完成時(shí)。由時(shí)間狀語by the middle of the 21st century可知要用將來完成時(shí)態(tài)。

【3】it.考查形式賓語及固定搭配。make it +adj “使…處于…狀態(tài)”。

【4】none.考查代詞及固定搭配。But表轉(zhuǎn)折，到其他地方找開放空間是重要，但是目前太陽系中除了地球沒有其他星球可以支持生命。 none of“沒有一個(gè)”

【5】to.考查固定搭配。the solution to“…的解決辦法”，注意to在這是介詞。

【6】however.考查連詞。前一句說沒有其他星球可以支持生命，結(jié)合后文知金星上還是有供給生命的水分。故這里缺少表示轉(zhuǎn)折的連詞。however表轉(zhuǎn)折。

【7】that.考查賓語從句的引導(dǎo)詞。該句是賓語從句，其引導(dǎo)詞為that。

【8】completely.考查副詞。completely修飾形容詞exhausted,表示地球資源完全枯竭。

【9】itself.考查反身代詞。地球本身 Earth itself.

【10】Besides/Moreover/Furthermore.考查副詞。.由語境知這里缺少個(gè)并列詞，只有副詞可單獨(dú)運(yùn)用，bessides,moreover,furthermore“而且，此外”，表并列關(guān)系。

考點(diǎn):考查對語法掌握和篇章理解能力

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