题目是:
The National Transportation Safety Board has recommended the use of fail-safe mechanisms on airliner cargo door latches
assuring the doors are properly closed before takeoff and to prevent them from popping open in flight.
A. assuring the doors are properly closed
B. for the assurance of proper closing
C. assuring proper closure
D. to assure closing the doors properly
E. to assure that the doors are properly closed
答案选E
想问一下, 如果是E选项,那么and 前后连接的一个是assure that...的从句, 一个是动词短语, 不是违反对称原则么??
还有一题....
In the recent years cattle breeders have increasingly used crossbreeding,
in part that their steers should acquire certain characteristics and partly because crossbreeding is said to provide hybrid vigor.
答案是
partly to aquire certain chatacteristics in their steers
请问:
partly... and partly...是对称了,但partly to do...and partly because...应该不对称吧??是不需要考虑partly后面的么?
-- by 会员 wyywing (2011/7/18 23:59:20)