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
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正确答案
试题解析
C、D项的逻辑表达是正确的,其他选项都有错误;但是D项中“cost”一词与主语“buying generic drugs”不一致,故本题应选C项。