GMAT考试

【单选题】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 writtenEnglish; 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.
Many doctors direct their patients to name-brand drugs, but smart consumers know that generic drugs cost half as much as buying name-brand drugs.
A、generic drugs cost half as much as buying name-brand drugs
B、buying generic drugs costs half as much as name-brand drugs
C、generic drugs cost half as much as name-brand drugs
D、buying generic drugs cost half as much as buying name-brand drugs
E、to buy generic drugs costs half as much as buying name-brand drugs
网考网参考答案：C
网考网解析：
The correct answer should relate the cost of "generic drugs" to the cost of "name-brand drugs," or "buying generic drugs" to "buying name-brand drugs;" in any event, the constructions should match. C and D are the only answers that provide appropriate parallel constructions, but D makes a grammatical error by using a plural verb, "cost," with a singular subject, "buying." C is the correct answer. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>