Both coffee and tea have beneficial as well as______side-effects; while they stimulate the heart and help overcome fatigue, they

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问题 Both coffee and tea have beneficial as well as______side-effects; while they stimulate the heart and help overcome fatigue, they also cause insomnia and other nervous disorder.

选项 A、injurious
B、malignant
C、salutary
D、specious

答案A

解析
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