l Day2
1.(173)The widely accepted big-bang theory holds that the universe began in an explosive instant 10 to 20billion years ago and has been expanding ever since. A
【先找主干,再分析】
A. that the universe began in anexplosive instant 10 to 20 billion years ago and has been expanding
B. that the universe had begun in anexplosive instant 10 to 20 billion years ago and had been expanding【时态错误】
C. that thebeginning of the universe was anexplosive instant 10 to 20 billion years ago that has expanded【谓语变成短语,不简洁;第二个that修饰instant不正确】
D. thebeginning of the universe to have been an explosive instant 10 to 20 billion years ago that is expanding 【谓语变成短语,不简洁;that isexpanding由主句变成从句,改变句意】
E. the universe to havebegun in an explosive instant 10 to20 billion years ago and has beenexpanding【表语从句中的连接词that一般不能省略】
2.(174)Often major economic shifts are so gradual asto be indistinguishable at first from ordinary fluctuations in thefinancial markets. A
【先找主干,再分析】
A.so gradual as to be indistinguishable
B.so gradual so that they can beindistinguishable【so...so that搭配错误】
C.so gradual that they are unableto be distinguished【不简洁】
D. gradualenough not to bedistinguishable 【enough偏向于主观判断,不符合逻辑】
E. gradual enough so thatone cannot distinguish them 【enough so that错误搭配】
3.(175)Experts estimate that ten times as muchpetroleum exists in sources like tar sands, heavy oil, and perhaps even in shalethan in conventional reservoirs. D
【先找主干,再分析】
A.sources like tarsands, heavy oil, and perhaps even in shale than【like表示比较,不表示列举;as much… than错误】
B.sources like tarsands, heavy oil, and perhaps even in shale than are【like表示比较,不表示列举;系动词are没有与其并列的词,多余】
C.such sources as tar sands, heavy oil, and perhaps even in shale as are【in导致不能三个成分不并列;系动词are没有与其并列的词,多余】
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 【as … than错误】
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