汇票上未记载付款地的，以（）地。
A.付款人的营业场所
B.付款人的住所
C.付款人的分支机构所在地
D.付款人的经常居住地
参考答案：A, B, D
― I don't think the man enjoys his life, ______?
― No, he can't. That poor man. [ ]
A. does he
B. do I
C. doesn't he
D. do you
下列计算正确的是[ ]
A．﹣a﹣a=a2
B．2a2+2a2=4a4
C．4a﹣3a=1
D．3x2y﹣4x2y=﹣x2y
