Question

He was about to turn around when he felt a hard s

He was about to turn around when he felt a hard slap on his back that knocked him___.
A、on；B、out；C、over；D、up

Answer 1

选C

意思是，在他要转过身的时候，他感到背后挨了重重的一下，然后他被打倒了。

knock over此处是打倒的意思。其他选项均不符合题意。

A是打在哪的意思 B是淘汰的意思   D是敲门唤醒的意思