Since most doctors are______about effectiveness of the new medicine, they seldom recommend it to their patients.

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问题 Since most doctors are______about effectiveness of the new medicine, they seldom recommend it to their patients.

选项 A、anxious
B、dubious
C、cynical
D、innocent

答案B

解析本题意为“由于大多数医生对于新药的药效不是很确定，所以他们很少将其推荐给病人”。dubious的意思是“可疑，不确定性”；anxious的意思是“紧张”；cynical的意思是“愤世嫉俗的”；innocent“无罪的，清白的”。四个选项中只有B项符合题意。

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