问题
选择题
It is only with the help of scientific research _____ bring PM1 air pollution under control.
A．that we will
B．we will
C．that we do
D．do we
答案
答案：A
题目分析：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。