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问题
填空题
所谓紧急停工是指（）。
答案
参考答案：
反应提升管切断进料油品打循环，两器流化
判断题
“蚁穴溃堤”这一成语主要揭示了生物对环境造成的影响。 [ ]
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选择题
—Keep quiet in class.
—What did he say?
—He _______.
A. said that keep quiet in class
B. said that kept quiet in class
C. told the students keep quiet in class
D. told the students to keep quiet in class
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