Question

A political advisor suggested giving out red pockets to the whole nation directly to encourage economics，_____I believe is of great value.
A that             B. /            C. which     D. why

Answer 1

C

在考查定语从句时会利用插入语或状语的添加来增加试题的难度。常见的插入语有：I think （suppose, expect, believe, imagine）, in my opinion, to tell you the truth等。做这类题目时我们可以先删去插入语或状语，找出句子的主干。在该句中先行词是discovery，which是在引导非限制性定语从句，在句子里做主语。