在塑料基托中，金属网状物应放置在
A．基托最薄处
B．基托最厚处
C．基托应力集中区
D．基托最窄处
E．牙槽嵴顶处
参考答案：C
补全对话，每空一词。
A: John, are you free tomorrow?
B: Yes, why?
A: Would you __1__ to go to the cinema with me?
B: That's a good __2__.
A: It's Jackie Chan. Do you like him?
B: Yes, he is my favourite film __3__. __4__ is the film?
A: It's in the evening.
B: Let's go __5__ Betty, too.
A: All right.
班级管理的主要对象是（）
A.班级公共财产
B.班级信息
C.学生
D.班级资料
