问题补充:
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
答案:
A. not make
(答案→)B. not to make
C. not making
D. do not make
解析:考查非谓语动词的结构平衡性。not to make it more difficult是与 to make it easier 形成对比的否定结构,两者在句中作表语。