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.
1.The recent surge in the number of airplane flights has clogged the nation's air-traffic control system, to lead to 55 percent more delays at airports, and prompts fears among some officials that safety is being compromised.
(A) to lead to 55 percent more delays at airports, and prompts
(B) leading to 55 percent more delay at airports and prompting
(C) to lead to a 55 percent increase in delay at airports and prompt
(D) to lead to an increase of 55 percent in delays at airports, and prompted
(E) leading to a 55-percent increase in delays at airports and prompting
OA:E
2.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 activatesthe 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
OA
求助 抛开其他语法问题, 就平行来说 为什么第一题里的C选项 to lead 跟 prompt 不平行?To 不可以省略吗? 而第二题里的D选项的To是可以省略的?