The purpose of new inventions is to make life easier,      it more difficult.
A．not make B．not makingC．not to makeD．do not make
C

試題分析：句意：新發(fā)明的目的是為了使生活更容易，而不是使生活更難。is to do sth, not to do sth 是要做……,而不是做……。所以要選C。
考點(diǎn): 考查非謂語(yǔ)動(dòng)詞的用法。
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