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题库 / Prep2007E2-SC-39
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.
As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful
As with the case of traditional pharmacies, on-line drugstores rely on prescriptions to have success
As is the case with traditional pharmacies, prescriptions are the cornerstone of a successful on-line drugstore
As traditional pharmacies, so on-line drugstores rely on prescriptions to be successful
Like traditional pharmacies, the cornerstone of a successful on-line drugstore is prescriptions
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AS做连词：当……时，像……一样，因为……，因此后面要跟完整的句子结构；AS作介词时：作为
A：it没有指代
C：the case is with ...
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