It is reported that this medicine is _______ against lung cancer.A、economicB、ea

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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

解析本题考查形容词辨析。economic意为“经济(上)的，合算的”；easy意为“简单的，容易的”；expensive意为“昂贵的”；effective意为“效果好的，显著的”。根据题意，选项D正确。

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