【单选题】It cannot hurt to ask a fruit seller in Tahiti for a lower price.( )
【单选题】If someone says, "It cannot hurt to ask." he means ______________.
A.
it's a good idea to ask.
B.
he doesn't want to ask.
C.
it will hurt if he asks.
D.
he's not sure whether to ask or not.
【单选题】继发型肺结核与原发性肺结核的主要不同点是
【判断题】MOOC是一种以开放访问和大规模参与为目的的在线课程,其中“开放”指任何一个学习都可以付费注册任意课程进行学习。
【单选题】Mr. Zhang is the best music teacher in our school, but he has hurt his left foot and cannot ________tomorrow’s concert.
【单选题】. The best music teacher in the school has hurt his left foot and cannot ______ tomorrow’s concert.
【简答题】A.She'll get hurt when skiing. B.She cannot learn skiing well. C.She will get lost on the mountain. D.She won't get the map.
【单选题】近年来兴起的慕课( mooc)指的是( )