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- 1515390
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- 2022-3-5
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- 1970-1-1
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Day2
1.(173)The widely accepted big-bang theory holds that the universe began in an explosive instant 10 to 20 billion years ago and has been expanding ever since. A
A.that the universe began in an explosive instant 10 to 20 billion years ago and has been expanding
B.that the universe had begun in an explosive instant 10 to 20 billion years ago and had been expanding(ago 表明是过去时,不该用过去完成时)
C.that the beginning of the universe was an explosive instant 10 to 20 billion years ago that has expanded (that 修饰 instant 不符合句意,这个expand真正的主语是宇宙)
D.the beginning of the universe to have been an explosive instant 10 to 20 billion years ago that is expanding (表达观点的动词后面要加that 引导从句,还有这里的that同C一样)
E.the universe to have begun in an explosive instant 10 to 20 billion years ago and has been expanding(E后面的会变成理论开始扩大,主语不对了)
2.(174)Often major economic shifts are so gradual as to be indistinguishable at first from ordinary fluctuations in the financial markets. C
A.so gradual as to be indistinguishable (so …as to be 表目的)
B.so gradual so that they can be indistinguishable (多了一个so)
C.so gradual that they are unable to be distinguished
D.gradual enough not to be distinguishable (not 一般是在enough前面的,而且一般是足够做某事 )
E.gradual enough so that one cannot distinguish them (enough 和so that 不兼容)
3.(175)Experts estimate that ten times as much petroleum exists in sources like tar sands, heavy oil, and perhaps even in shale than in conventional reservoirs. D
A.sources like tar sands, heavy oil, and perhaps even in shale than (Like 不能举例)
B.sources like tar sands, heavy oil, and perhaps even in shale than are(同A,而且than 不该和 times 放在一起用)
C.such sources as tar sands, heavy oil, and perhaps even in shale as are (里面的in 和前面的不平行,因为前面的名词都没有介词出现。此外,这里的are出现的很莫名,实际主语是P,那么是单数,所以应该改成is)
D.such sources as tar sands, heavy oil, and perhaps even shale as
E.such sources as tar sands, heavy oil, and perhaps even shale than(同B)
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