The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as "standing waves."
(A) crests and troughs that remain stationary although the air that forms them is moving rapidly, are
(B) crests and troughs that remain stationary although they are formed by rapidly moving air, are
(C) crests and troughs that remain stationary although the air that forms them is moving rapidly, is
(D) stationary crests and troughs although the air that forms them is moving rapidly, are
(E) stationary crests and troughs although they are formed by rapidly moving air, is
答案C，没有异议。想请教一下,句中的act like.
在56题中,OG的解释为act like: to behave orcomport oneself and descriges the action of a person(He act like a fool.)
act as: describes the function of a thing(the breakwater...acts as a buffer),也就是说act like来表示人的行为,act as 表示东西的功能.那么照这样就是,90题就应该用act as 啊??
同时还想问一下,B中 og 解释为: the subordinate clause in the passive voice following although is awkward and unclear?我知道ets倾向于主动,但这里是怎样unclear??
3x
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