第 1 题 · 六级
Uranium is used as fuel for nuclear power, which the scientists have studied for decades.
核心词：uranium jʊˈreɪniəm n. 铀
铀被用作核能燃料，科学家们已研究数十年。
现在完成时被动语态 + 介词短语 + which 从句（现在完成）短语 enriched uranium短语 uranium enrichment
___ is used as fuel for nuclear power, which the scientists have studied for decades.
第 2 题 · 六级
The manager took a pragmatic approach to the problem, which the workers warmly supported.
核心词：pragmatic præɡˈmætɪk adj. 务实的，讲求实际的
经理对问题采取了务实的做法，工人们热烈支持。
一般过去时主谓宾 + 介词短语 + which 从句 + 副词短语 a pragmatic approach短语 pragmatic solutions
The manager took a ___ approach to the problem, which the workers warmly supported.
第 3 题 · 六级
The mistake led to a disastrous result, which the team had feared all along.
核心词：disastrous dɪˈzɑːstrəs adj. 灾难性的
这个错误导致了灾难性的后果，团队一直担心这一点。
过去完成时主谓 + 介词短语 + which 从句（过去完成 + all along）短语 a disastrous result短语 disastrous effects
The mistake led to a ___ result, which the team had feared all along.
