多项选择题

我国宪法规定了公民遵守宪法和法律的义务，还规定了若干具体有义务，包括（）

A.保守国家秘密
B.爱护公共财物
C.遵守劳动纪律
D.遵守公共秩序
E.尊重社会公德

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单项选择题

John's score on the test is the highest in the class; he____ last night.
A) should study B) should have studied
C) must have studied D) must have to study
A、should study
B、should have studied
C、must have studied
D、must have to study

直拳击打的部位为（），摆拳击打的部位为（），勾拳击打的部位为（）

答案： (1)
正脸、脸两侧、下颚及胸腹部