It is reported that this medicine is______ against lung cancer.A、economicB、easy

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问题 It is reported that this medicine is______ against lung cancer.

选项 A、economic
B、easy
C、expensive
D、effective

答案 D

解析句意：据报道这种药对于肺癌药效显著。本题考查形容词词义辨析，与medicine“药品”相关的形容词应是effective"有效的”，因此选D。

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