This text mainly discusses ______. ______ does NOT help to prevent headaches.

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问题 This text mainly discusses ______.
______ does NOT help to prevent headaches.

选项 A、Doing Exercises
B、Drinking a lot of coffee
C、Eating regularly
D、Having enough sleep

答案B

解析 其中A,C,D三项都有助于防止头痛,只有B为否定项。
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