题目内容：

Yesterday Ben had an accident.A motorcycle ________ him down,but he wasn't hurt badly.
A.crashed B.stopped C.put D.knocked

优质解答

D
put down 1.放下 2.写下 3.批评;奚落;贬损
knock down 击倒;撞倒;击落;使屈服;拆除;拆卸;迫使降低;获得
在 此句中是 “撞倒”的意思
crash down 1.坠落 2 朝下猛撞 3.摔下来
它主要是指很猛烈,被彻底摧毁的意思
stop down 很少这样用用