摘要: is our belief that improvements in health care will lead to a stronger.more prosperous economy. A.As B.That C.This D.It 答案 D 解析 本句考查从句的用法.根据句子结构.that引导的从句为主语从句.作真正主语.因此前边应有形式主语.而形式主语只能用it.不能用this或that.

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