As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful, since it is primarily prescriptions that attract the customers, who then also buy other health-related items.
(A) As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful (B) As with the case of traditional pharmacies, on-line drugstores rely on prescriptions to have success (C) As is the case with traditional pharmacies , prescriptions are the cornerstone of a successful on-line drugstore (D) As traditional pharmacies, so on-line drugstores rely on prescriptions to be successful (E) Like traditional pharmacies, the cornerstone of a successful on-line drugstore is prescriptions 答案是C，但是，后面句子的主语不需要平行对称么，traditional pharmacies和on-line drugstore。
可以参加老prep59题： A new genetically engineered papaya was produced not by profit-motivated seed companies, as was the case with most genetically modified crops previously approved for commercial use, but by university and United States Department of Agriculture researchers who allowed growers to use it free of charge
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发表于 2012-3-23 20:28:58
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