Contrary to popular belief, taking a walk immediately after meals doesn’t do good to our

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(答案→)A. necessarily
B. specially
C. directly
D. constantly
解析：
这题考查副词辨析：necessarily必要的， not necessarily“未必”specially特殊的，directly直接的，constantly连续的，句意是：和大家认为的相反，饭后立即散步对健康未必有好处。选A。