Question

【题目】________ is known to all， friendship plays a very important part in our social life.

A.WhatB.ThatC.AsD.It

Answer 1

【答案】C

【解析】

考查as引导的非限制性定语从句。句意：众所周知，友谊在我们的社会生活中扮演着非常重要的角色。as is known to all，“众所周知”，此处是as引导的非限制性定语从句。是“正如”的意思。故选C。