It is not until recently ______ there are many different kinds of hearing defects.

admin2010-03-19 79

问题 It is not until recently ______ there are many different kinds of hearing defects.

选项 A、have the scientists discovered
B、the scientists have discovered
C、that the scientists have discovered
D、that will the scientist have discovered

答案C

解析本句是强调句式，所以原本由于否定词在句首需要主谓颠倒的句式，在强调句里就不需要再倒装了。

转载请注明原文地址:https://kaotiyun.com/show/wu9K777K

专业英语四级

相关试题推荐

随机试题

最新回复(0)