在109□270≈109万中，□里可填的最小数字是[ ]
A．0
B．5
C．9
答案：A
I was wondering if we could go skating on the weekend.
— _____ good. [ ]
A. Sound
B. Sounded
C. Sounding
D. Sounds
救生艇筏满足什么条件可以免配降落和登乘装置？
