题目内容

It is only with the help of scientific research _____ bring PM1 air pollution under control.
A．that we willB．we will
C．that we doD．do we
A

试题分析：考查强调句结构。强调句的结构为it + be + 强调部分 + that从句。此题强调状语only with the help of scientific research。句意：只有在科学研究的帮助，我们将PM1空气污染得到控制。故A正确。
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