小平板车B静止在光滑水平面上,物体A以某一初速v0从车的一端滑向另一端,由于A、B间存在摩擦,因而A在B上开始做减速运动,若B车足够长,A的速度最小值应发生在( )
"How am I supposed (live) without you?" Jane said to Dad, tears in eyes.
You look absent﹣minded. you (expect) someone?
Yes. My e﹣friend is coming over. We've never seen each other before.
The survey shows that few people believe robots (control) our planet one day.
You (promise) to take our boy to Disneyland last year. Don't let him down again.
I'd like to give my thanks to Alice for (share) her exciting experiences in Africa.