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11．In July 1994Jupiter，the largest planet in our solar system，was struck by 21pieces of a comet（彗星）．When the fragment（碎片）landed in the southern part of the giant planet，the explosions were watched by scientists here on earth．But what if our own planet was hit by a comet？
The year is 2094．It has been announced that a comet is heading towards the Earth．Most of it will miss our plant，but two fragments will probably hit the southern part of the Earth．The news has caused panic．
On 17July，a fragment four kilometers wide enters the Earth's atmosphere with a huge explosion．About half of the fragment is destroyed．But the major part survives and hits the South Atlantic at 200times the speed of sound．The sea boils and an enormous wave is created and spreads．The wall of water rushes towards southern Africa at 800kilometers an hour．Cities on the African coast are totally destroyed and millions of people are drowned．The wave moves into the Indian Ocean and heads towards Asia．
Millions of people are already dead in the southern part of the Earth，but the north won't escape for long．Tons of broken pieces are thrown into the atmosphere by the explosions．As the sun is hidden by clouds of dust，temperatures around the world fall to almost zero．Crops are ruined．Wars break out as countries fight for food．A year later civilization has collapsed．No more than 10million people have survived．
Could it really happen？In fact，it has already happened more than once in the history of the Earth．The dinosaurs（恐龙）were on the Earth for over 160million years．Then 65million years ago they suddenly disappeared．Many scientists believe that the Earth was hit by a space fragment．The dinosaurs couldn't survive in the cold climate that followed and they became extinct．Will we meet the same end？
67．Which of the following is NOT TRUE according to the author's description of the disaster in 2094？C
A．The whole world becomes extremely cold．
B．All the coastal cities in African are destroyed．
C．The whole mankind becomes extinct．
D．The visit of the comet results in wars．
68．Why does the author mention dinosaurs at the end of the passage？C
A．Because they could only live in the warm climate．
B．Because they once ruled the Earth．
C．Because their extinction shows future disasters．
D．Because dinosaurs and humans never live in the same age．
69．In writing the passage，the author intends toD．
A．give an accurate description of the possible disaster in the future．
B．prove that humans will sooner or later be destroyed
C．tell the historical development of the earth
D．warn of a possible disaster in the future
70．It can be concluded that the passage is most probably part of a （n ）D．
A．terror story B．news report
C．research paper D．article of popular science． 试题答案
分析 本文是一篇科普类文章．文章讲述了未来由于彗星撞击地球可能会出现的灾难．
解答 67：C考查细节理解．根据文章的第四段中的As the sun is hidden by clouds of dust，temperatures around the world fall to almost zero．可知A正确；根据第三段中的Cities on the African coast are totally destroyed and millions of people are drowned．可知B正确；根据根据文章的第四段中的Crops are ruined．Wars break out as countries fight for food．可知D正确；根据文章最后一段中的Will we meet the same end？可知，人类是否会灭绝没有将清楚．故四个选项中C不正确．
68：C考查推理判断．根据文章的最后两句话The dinosaurs couldn't survive in the cold climate that followed and they became extinct．Will we meet the same end？可知，恐龙在那种寒冷的环境下会灭绝，人类未来也可能有同样的遭遇．故选C．
69：D考查作者的写作意图．根据文章最后一段中的Could it really happen？In fact，it has already happened more than once in the history of the Earth．和Will we meet the same end？可知，作者在给人类提出未来可能发生灾难的警示．故选D．
70：D考查文章的出处．此处article of popular science大众科学文章；news report新闻报道；research paper研究论文；horror story恐怖故事．根据文章的大意可知，是一篇大众科学文章．故选D．
点评 本文是新闻报道类阅读理解．做这类题材阅读理解时要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据．
When he woke up he didn’t remember how that _______
A. came about B. came out
C. came along D. came across
