题目内容

PPP stands for , and .

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For skill-oriented lessons usually takemodel.

All the three stages of presentaiton, practice and product are equal.

A. 对
B. 错

PPP is really about language input and followed by output.

A. 对
B. 错

下列属于单轴关节的是

A. 肩关节
B. 拇指腕掌关节
C. 腕关节
D. 指问关节
E. 肩锁关节