Question

【题目】语法填空。

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 26st 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.

Answer 1

【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】

试题分析：文章大意：如果地球上的人口仍以当前的增长率增长的话，最终地球上将没有足够的资源供给生命生长。面对人口急剧地增长，资源日益地短缺的困境，可能的途径就是其他星球寻找空间，比如金星。

【1】left.考查非谓语动词，leave与resources是动宾关系，应用leave的过去分词形式left做后置定语。

【2】will have used.考查将来完成时。由时间状语by the middle of the 21st century可知要用将来完成时态。

【3】it.考查形式宾语及固定搭配。make it +adj “使…处于…状态”。

【4】none.考查代词及固定搭配。But表转折，到其他地方找开放空间是重要，但是目前太阳系中除了地球没有其他星球可以支持生命。 none of“没有一个”

【5】to.考查固定搭配。the solution to“…的解决办法”，注意to在这是介词。

【6】however.考查连词。前一句说没有其他星球可以支持生命，结合后文知金星上还是有供给生命的水分。故这里缺少表示转折的连词。however表转折。

【7】that.考查宾语从句的引导词。该句是宾语从句，其引导词为that。

【8】completely.考查副词。completely修饰形容词exhausted,表示地球资源完全枯竭。

【9】itself.考查反身代词。地球本身 Earth itself.

【10】Besides/Moreover/Furthermore.考查副词。.由语境知这里缺少个并列词，只有副词可单独运用，bessides,moreover,furthermore“而且，此外”，表并列关系。

考点:考查对语法掌握和篇章理解能力