og72提问（谢谢帮忙看一下）

72. The number of undergraduate degrees in engineering awarded by colleges and universities in the United
States increased by more than twice from 1978 to 1985.
(A) increased by more than twice
(B) increased more than two times
(C) more than doubled
(D) was more than doubled
(E) had more than doubled

Answer to Question 72
Choice A is faulty because an adverb such as twice cannot function as an object of the preposition by. B distorts the sentence's meaning, stating that the number of engineering degrees conferred increased on more than two distinct occasions. D's passive verb was ... doubled suggests without warrant that some unnamed agent increased the number of engineering degrees. The past perfect tense in E, had... doubled, is inappropriate
unless the increase in engineering degrees is specifically being viewed as having occurred further back in the
past than some subsequent event. Choice C is best.

那位大侠指点下这道题目的关键所在，看不出b有什么不好的

谢谢了，大后天就要考试了。。

increased more than two times 应该是增加两倍，所以是原来的三倍。

increased by more than two times 同上，也不对吧。

所以更改了原来的含义。

(C)more than doubled。double在此作动词。译作：to become twice as big or twice as much, or to make something twice as big or twice as much。

所以原句要强调的是“变为原来的两倍”而并没有强调“分别增加”

所以要选：(C) 而不选：（B）

OG的解释就是这样的,two times是增加了两次不是增加了两倍.倍数统统用double或twice来表示.

Got it. Thank you, guys.