Question

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

Answer 1

C

试题分析：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。