受精卵和未受精卵各发育成什么？
参考答案：受精卵：蜂王和工蜂
未受精卵：雄蜂
— Would you mind me smoking here?
— ______. It's non-smoking area here. [ ]
A. Yes, go ahead
B. I'm afraid I've to say yes
C. No, please
D. No, you can't
把x2﹣1分解因式为 [ ]
A．（x﹣1）2
B．（x+1）2
C．﹣（x+1）（x﹣1）
D．（x+1）（x﹣1）
