问题
选择题
The purpose of new inventions is _______ life more difficult, but to make it easier.
A.not make
B.not making
C.not to make
D.do not make
答案
答案:C
题目分析:句意:新发明的目的不是使生活更加困难,而是使其更加容易。本题用to do不定式做目的状语,否定形式在不定式前面加not。故选C。