come in please.

题目

come in please.
it is one's bad habits,rather than a certain natural disaster,______one's longevity for most of the time.
a.that affects b.which affect c.which affects d.that affect
请问为什麼选D.不是有逗号不能有that的吗?我怕我搞混

答案

友友,你把定语从句和强调句型弄混了.两个逗号间的插入成分可去掉.即：It is one's bad habits ________ one's longevity for most of the time.我们讲过,判断一个句子是否是强调句型,可先看是否有It's 和that.选项中...