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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.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
C.that the beginning of the universe was an explosive instant 10 to 20 billion years ago that has expanded
D.the beginning of the universe to have been an explosive instant 10 to 20 billion years ago that is expanding
E.the universe to have begun in an explosive instant 10 to 20 billion years ago and has been expanding
【选择】A
【分析】对了
2.(174)Often major economic shifts are so gradual as to be indistinguishable at first from ordinary fluctuations in the financial markets.
A.so gradual as to be indistinguishable
B.so gradual so that they can be indistinguishable
C.so gradual that they are unable to be distinguished
D.gradual enough not to be distinguishable
E.gradual enough so that one cannot distinguish them
【选择】A
【分析】对了
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.
A.sources like tar sands, heavy oil, and perhaps even in shale than
B.sources like tar sands, heavy oil, and perhaps even in shale than are
C.such sources as tar sands, heavy oil, and perhaps even in shale as are
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
【选择】D
【分析】对了
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