求教一道托福语法题

agathagu

38. The sensation of sound is produced how vibrations transmitted through the

            A           B               C

air strike the eardrum.

答案是（C）HOW不对，我能理解，可是，这个（D）STRIKE也不对呀，应该是STRIKING吧。

yongchou

I agree

suozhang2

38. The sensation of sound is produced when vibrations (transmitted through the

air) strike the eardrum.


HOW 改成WHEN。 括号中的是过去分词做定语。STRIKE 是从句谓语。