单选：菊科植物的雄蕊类型为（）A．单体雄蕊B．二体雄蕊C．二强雄蕊D．四强雄蕊E．聚药雄蕊

- I think the language lab is very helpful in improving our English.- _____...

[交际用语]- I'm sorry I broke your mirror. - _________

- I heard you got a full mark in the English exam. Congratulations!- _________

I wish you success in your career.- _________A. You are welcome. B. I think so

Could you help me with my physics, please? __________..A. No, no way. B. No,