进行抽样过程中产生的误差是（）
A.系统误差
B.随机测量误差
C.抽样误差
D.过失误差
E.以上都不是
参考答案：C
—Helen, we are taking a boat trip to Hainan this weekend. Would you like to go with us?
—That sounds exciting. I’d like to, but I can’t. _______!
A．Goodbye
B．Very sorry.
C．Have a nice trip
D．I envy you.
Mrs Brown is so ________ about her housework that few servants want to work for her.[ ]
A．particular
B．neat
C．skillful
D．special
