Sales of the new cold medicine will be ______by the Food and Drug Administration until more tests are completed.

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问题 Sales of the new cold medicine will be ______by the Food and Drug Administration until more tests are completed.

选项 A、expired
B、delivered
C、involved
D、suspended

答案D

解析本题是选择适合上下文的过去分词的题。空格前提及新的感冒药的销售。空格后是意为“直到完成更多的测试”的状语从句。要完成更多的测试意味着感冒药的药效还没有得到切实证明，因此空格处要填暂停新的感冒药的销售的suspended。

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