In practice teaching, we should pay attention to after-class experiments, on-the-spot teaching and CAD drawing.
在实践教学中，注重课外实验、现场教学、CAD绘图。
After class we enjoy all kinds of activities, such as going in for sports, doing experiments or surfing the Internet.
放学后，我们享受各种各样的活动，例如进行运动，做实验或上网。
Then select the experimental class and the comparison class to conduct teaching experiments after the courseware made.
课件制成之后选取实验班和对照班进行教学实验。
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