The purpose of new technologies is to make life easier, _______

The purpose of new technologies is to make life easier, _______ it more difficult.
A、not make
B、not to make
C、not making
D、do not make
【正确答案】：B
【题目解析】：考查不定式作表语。句意：新技术的目的是使生活更容易，不是使生活更难。根据语义后面的结构应与to make life easier结构一样，否定式应在to前面加not,故选B。