2.The purpose of new technologies is to make life easier,____ it more difficult.

问题描述:

2.The purpose of new technologies is to make life easier,____ it more difficult.
A.not make B.not to make
C.not making D.don’t make
此题答案是选B
但在不是当两个或两个以上的不定式并列在一起时,第一个不定式带to,后面的不定式往往省略to

因为意思转折了