Question

It’s neither aliens nor a rare disease ________ will threaten the human race in the future, but climate change.

A. whetherB. whichC. whatD. that

Answer

D

【解析】

试题分析：考查强调句式。句意：既不是外星人也不是罕见的疾病在未来会威胁人类，而是气候的变化。本句去掉It’s和空格为：Neither aliens nor a rare disease will threaten the human race in the future, but climate change.句子仍然成立，故本句是强调句，根据强调句结构，故选D。

【名师点睛】

强调句型的用法

1.在英语中，我们常用It is/was… who/that结构来突出强调句子的某一成分(一般是句子中主语，宾语或状语)。在这个句型中，it没有词汇意义，只是引出被强调的成分。如果被强调的成分是表示人的词，用who或that来连接都可以。如果是其它成分，则一律用that来连接。

It is my mother who/that cooks every day.是我的妈妈每天做饭；

It was yesterday that Tom passed in the maths exam.是昨天汤姆通过了数学考试。

2.被强调部分既包括人又包括物，用that不用who。

It was the things and people that they remembered that they were talking about.

3.区分定语从句和强调句型某些定语从句和强调句型形式差不多，容易混淆。如果去掉it is/was ...that句子仍然通顺成立，则为强调句型，不成立不通顺，则为定语从句。

It was three years ago that he went to American for a further study去掉It was that句子为Three years ago he went to America for a further study.句子通顺，意思完整，那么，这就是一个强调句型。

考点：考查强调句式