IfthepopulationoftheEarthkeepson
問題詳情:
If the population of the Earth keeps on__61._(increase) at its present rate,there will__62._(event) not be enough resources left to support life on the planet. By the middle of the 21st century,if present trends continue,we__63_(use) up all the oil that drive our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on Earth will make it__64 (necessity) for us to look for somewhere else. But__65._of the other planets in our solar system are capable of supporting life at present. One possible solution to the problem,__66._, has recently been suggested by an American scientist, Professor Carl Sagan. Sagarn believes that__67._the Earth’s resources are completely__68_(exhaust) ,it will be possible to change the atmosphere of Venus and__69_create a new world almost as large as Earth itself. Something is difficult. Venus is much hotter than the Earth.__70. _, there is only a tiny amount of water there.
【回答】
61.解析: 考查短語keep on doing的用法。
*:increasing
62. 解析: There will not be enough resources的主謂結構是完整的,所以只能用event的副詞形式eventually作狀語。
*:eventually
63. 解析: 時間狀語是by+將來時間,謂語用將來完成時態。
*:will have used
64. 解析: 考查句型make+it+adj.+for+sb.+to do sth.。
*:necessary
65. 解析: 考查理解和代詞。根據意思應該是“其他行星中到目前為止還沒有一個適合生命的生存。”none of+複數名詞/不可數名詞,表示“……中沒有一個。”
*:none
66. 解析: 考查上下文理解和行文邏輯。前文説“沒辦法”,這裏説“可能的解決方案”所以用“however”表示轉折。
*:however
67. 解析: 考查內容理解和從句。這裏應該是“在地球的資源完全枯竭之前”,所以用before。
*:before
68. 解析: 是個及物動詞,“耗盡,用完”,這裏應該用被動語態。
*:exhausted
69. 解析: 考慮到行文邏輯,這裏表示的是結果,因此,so/therefore是最佳措辭。
*:so/therefore
70. 解析: 考查行文邏輯。文章最後兩句很明顯是解釋something is difficult這句話。有兩件事是困難的,除了Venus比地球熱得多,另一難題是那裏的水有限,所以這裏用Besides.
*:Besides
知識點:閲讀填空
題型:閲讀填空