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  3. The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find fiv

The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find fiv

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问题 The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.
   These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.
James Watson, who later headed the Human Genome Project, along with Englishman Francis Crick discovered the double helix in 1953, the basic structure of DNA, when the two were young scientists.
选项 A、James Watson, who later headed the Human Genome Project, along with Englishman Francis Crick discovered the double helix in 1953, the basic structure of DNA, when the two were young scientists.
B、The double helix, the basic structure of DNA, was discovered in 1953 by two young scientists, the Englishman Francis Crick and James Watson, who later headed the Human Genome Project.
C、The basic structure of DNA, the double helix, was discovered in 1953 by the Englishman Francis Crick and James Watson, later head of the Human Genome Project, two young scientists.
D、The Englishman Francis Crick and James Watson, later heading the Human Genome Project, were the young scientists who discovered the basic structure of DNA in 1953, which was the double helix.
E、The basic structure of DNA, the double helix, was discovered by James Watson, later head of the Human Genome Project, along with another of two young scientists, the Englishman Francis Crick, in 1953.
答案B
解析 A implies that 1953 may have been the basic structure of DNA. In C, the phrase "two young scientists" dangles at the end of the sentence with no clear referent. In D, the "which" has no clear referent, and it could be interpreted to read that the double helix was the structure of DNA only in 1953. The information is presented less logically in E than in B, because it makes the most sense to mention that there were two scientists prior to naming either of them, and because it would be clearer if the date of discovery and the verb "discovered" were paired more closely in the sentence. B presents the clearest statement of the facts.
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