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【题目】完形填空

阅读下面短文,理解大意,从题中所给的A、B、C、D四个选项中选出一个最佳答案。

Mars is not, it seems, the dry old planet we once believed__ __. Astronauts who are__ __to go there in the next decade may find plenty__ __water to slake(消除)their thirst. And with water present the__ __of finding some sort of life on Mars are__ _brighter.

This is the view of forty geologists who have been analyzing____of pictures and other scientific_ __obtained by robot explorers in the sixties and seventies.

To begin with, scientists thought the Red planet was as____as the Moon____dust storms swirling over vast sandy___. But now the picture is very different____mountains and valleys carved by____glaciers and rivers rushing and rumbling deep underground.

In a report on the analysis of the Martian pictures Dr. Michael Car of the U.S. Geological Survey comments: “I am convinced____lots of water on Mars.” Any surface water will be in the____of ice. But it could save explorers from____to take so much____with them.

The report says____Mars probably had a warmer climate in ages____due to its axis (轴) having been more tilted (倾斜) towards the sun.

____signs of plant or animal life have been detected by instruments landed on Mars,____the landing vehicles have been sent there for a few years.

【1】A. it is B.it C.it to be D.was

2A. expected B.hoped C.required D.sent

3A. to B.of C.more D.in

4A. chances B.openings C.occasions D.possibility

5A. quite B.very C.much D.more

6A. a few B.many C.thousand D.thousands

7A. skills B.news C.intelligence D.information

【8】A. peaceful B.quiet C.lifeless D.dead

9 of B.with C.for D.through

【10】A. deserts B.mountains C.rivers D.seas

【11A. from B.between C.for D.with

【12A. energetic B.great C.heavy D.powerful

【13A. there's B.there're C.here's D.here're

【14A. appearance B.way C.form D.shape

【15A. have B.having C.carry D.carrying

【16A. water B.ice C.equipment D.oxygen

【17A. what B.if C.how D.that

【18A. pass B.past C.ago D.before

【19A. Not B.No C.Nor D.Never

20A. probably B.perhaps C.supposed D.although

【答案】

【1】C

2A

3B

4A

5C

6D

7D

8C

9B

【10A

【11D

【12D

【13A

【14C

【15B

【16A

【17D

【18B

【19B

20D

【解析】科学家认为火星月球一样没有生命,但新的资料显示,火星似乎并不像我们过去认为的那么干燥。火星是怎么样的呢?请读此文。

【1】C 根据新的资料显示,火星似乎并不像我们过去认为的那么干燥。it代替前面的专有名词Mars; to be 为不定式的省略式,其后面省略了dry。 不定式的省略式通常省略to后面的成分,但后面为to be结构时,就要保留be而省略其后面的成分。

2A expect somebody to do something表示“期待某人做某事”。这里用其被动语态形式:be expected to do sth. 表示“某人被期待做某事”。

3B 此句的“plenty of=a lot of”为固定词组,意思是“大量;许多;充足”。

4A 本句的意思是“由于水的发现,在火星上面找到某种生命形式的机会就变得更加明朗了”。

5C 此处的much用来修饰比较级,其它选项都不能修饰比较级,但quite better除外。

6D thousands of用复数形式表示不确定的数字,此处意思是“数以千计的”,后接复数名词;a few of后接“限定词+复数名词”,意思是“某(固定)范围内的一些”;many of 后接“限定词+复数名词”,意思是“某(固定范围)内的许多”。

7D 指的是“在六七十年代探测器获得的其他科学信息(information)”。

8C 此句的意思是“刚开始的时候,科学家认为这颗红色的行星象月球一样没有生命(lifeless)”。

9B 此处为“with+名词/代词+不定式、分词、形容词、副词、介词短语等”构成的复合结构作状语。

【10A 此句意思是“沙暴(dust storms)在广袤的沙漠(deserts)上旋转”。

【11D 注意此题的关键是要搞清它不是be different from结构,因为此结构后的名词前要用限定词,而这个空后面的名词前无限定词,故可排除。这个空与第24空一样,为“with复合结构”作状语。

【12D 这里用powerful形容冰河对山谷冲刷的威力巨大。

【13A 此句用的是“there be”结构,其后面的名词water(即主语)为不可数名词,故谓语动词be用单数形式。

【14C 词组in the form of的意思是“以……形式”。此句意思是“任何表面上的水将以冰的形式存在。”

【15B from为介词,后面接动词的ing形式,故可排除A和C两个选项;这个空为have to 结构,意思是“必须;不得不”,所以其后接动词原形。

【16A 此句的意思是“水的存在使探险者们不用随身携带大量的水。”

【17D 此句意思是“报告说由于火星的轴在过去的岁月中更倾斜于太阳,那时火星的天气,可能比现在暖和”。此处that引导一个宾语从句,其本身在宾语从句中不充当任何成分,也没有任何词汇意义,仅起连接的作用。

【18B “in ages past”表示“在过去的岁月中”。

【19B no为形容词,等于“not a/not any”, 表示“没有”,后接名词; 而not的后面一般接动词、形容词或从句等成分。

20D although 引导让步状语从句,表示“尽管……,但是……。”

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