在移动互联网中，LBS的意思是（）
A.大数据
B.LocationBasedServices的缩写
C.基于位置的服务
D.远程服务
参考答案：B, C
Why hasn’t he come?________ on time, we would have to put off the trip.
A．If he doesn’t come
B．If he will not come
C．If he didn’t come
D．If he wouldn’t come
999×101的值为( )。
A．99909
B．99999
C．99990
D．100899
