（-123）10的原码是（）。
A.11111011
B.01111011
C.01111101
D.10000100
参考答案：A
— _____ do you go to the English club?
— Once a week. [ ]
A. How old
B. How often
C. How much
D. How many
投诉处理中，如何应对完全失控的客户？
