题目内容

This expression means to ask someone to say that they hope you will have success

A. Wish me luck!
B. Excuse me.
C. How are you?

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When you decide to do something by a certain time, you are __________.

A. improving your English
B. setting a goal
C. taking a step

(本题请在笔记本上完成，完成后在空格内填写“已完成”)Your list of points（你预测的语言点）：___________________________________________________________________________________________________________________________

炼钢过程中，萤石的主要作用是( )

A. 造渣剂
B. 化渣剂
C. 增碳剂

石灰的有效成分是（）

A. CaCO3
B. Ca
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