pre-test 19, 头大了...

19. Some anthropologists regard the early hominids' manner of walking as being less efficient than in modern human beings.

C. as less efficient than that of

D. to be less efficient than that of

I chosed D. but the answer is C

有AS THAN 的用法吗?

是regard as 的搭配，

考点是固定搭配＋比较

哦....原来如此...头打结了我...