自行修改统计资料的统计违法行为的主体是地方人民政府、政府统计机构或有关部门、单位的负责人。（）
参考答案：对
— Sorry, Professor Smith. I didn't finish the assignment yesterday.
— Oh, you _____ have done it as yesterday was the deadline. [ ]
A. must
B. mustn't
C. should
D. shouldn't
社会保险发起于19世纪的( )
A．美国
B．日本
C．法国
D．英国
