The boy knocked down by the car stood up all by himself , unhurt.
A. apparently
B. doubtfully
C. unfortunately
D. generally
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(答案→)A. apparently
B. doubtfully
C. unfortunately
D. generally
解析：考察副词词义辨析。A明显地；B怀疑地；C不幸地；D一般地；句意：那个被汽车撞倒的男孩自己站了起来，很明显没有受伤。根据句意说明A正确。