18. A peculiar feature of the embryonic mammalian circulatory system is that in the area of the heart the cells adhere to one another, beating in unison and adopting specialized orientations exclusive of one another. (A) beating in unison and adopting (B) they beat in unison while adopting (C) beat in unison, and adopt (D) beating in unison yet adopting(D) (E) even though they beat in unison and adopt [D]* 答案给的是D,真是不解。为什么不选 C。怒小弟愚钝,请指教!
(A) beating in unison and adopting
(B) they beat in unison while adopting
(C) beat in unison, and adopt
(D) beating in unison yet adopting(D)
(E) even though they beat in unison and adopt [D]*
答案给的是D,真是不解。为什么不选 C。怒小弟愚钝,请指教!
unison是一致的意思,注意后面specialized是特别的意思
这两个词不是有点矛盾的意味吗?你把句子译成中文就明白了
它们一起去beat,但有分别adopt
所以中间要用一个有转折意味的连词,所以有and的选项都错,
剩下的B,D选项中,很容易可以排除B,因为有了they之后后面就是一个完整的句子了
两个完整的句子却没有连接词,合在一起是不对的。
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