Question

The Internet and the effect       brought about did a lot of good to our daily life and work. That is to say, the Internet has made a great difference in many aspects.

A．that

B．what

C．which

D．it

Answer 1

D

解析试题分析：句意：网络及其带来的影响对我们的日常工作和生活很有益。也就是说，网络在许多方面产生了很大的影响。这是定语从句修饰先行词effect, effect在从句中做brought about的宾语，即：the effect that/which the Internet brought about. it指代前面提到的the Internet，此处省略了关系词that/which(做宾语可省略).故D正确。
考点：考查代词和关系词的区别。