根据已有知识对后学知识会产生促进或干扰作用而划分的两种迁移类型是（）与（）。

填空题一般来说，教学过程的基本要素包括教师、学生、（）和（）四个部分。

填空题马斯洛将七种需要又分为（）和（）。

单项选择题The bird （）its wings and flew to the south.

A. beat
B. hit
C. strike
D. struck

单项选择题—May I have a doggie bag —（）, Madam. I'll wrap it up for you.

A. Go ahead
B. Come on
C. My pleasure
D. No problem

单项选择题—The drunk driver wishes he （）so many injuries in the accident. —But he （）.

A. hadn't caused ; had
B. didn't cause ; did
C. hasn't caused ; did
D. hasn't caused ; has