求大神解答OG问题

lulu178101

OG13 SC 73

Unlike the original National Museum of Science and Technology in Italy, where the models are encased in glass or operated only by staff members, the Virtual Leonardo Project, an online version of the museum, encourages visitors to "touch" each exhibit, which thereby activates the animated functions of the piece.

A. exhibit, which thereby activates
B. exhibit, in turn an activation of
C. exhibit, and it will activate
D. exhibit and thereby activate
E. exhibit which, as a result, activates

答案为D

我懂which指代的问题，但是不太懂D选项activate前面的to可以被省略

yuanzhenh

activate 前边不是省略了to，是谓语动词，它的主语是前面的句子

lulu178101

yuanzhenh 发表于 2015-2-21 01:08
activate 前边不是省略了to，是谓语动词，它的主语是前面的句子

是省略了to 如果主语是前面的句子要用单数activates，但是答案是activate