蜜蜂每秒飞行6.7米，比蜻蜓飞行的速度慢33%．蜻蜓每秒飞多少米？
6.7÷（1-33%）
=6.7÷67%，
=10（米）；
答：蜻蜓每秒飞10米．
I haven't got _____ erasers. I think Ann has got _____. [ ]
A. any; any
B. some; any
C. some; some
D. any; some
落实新建居民住宅小区物业管理“三个提前”工作要求有哪些？
