4 Language points
1. Buses have routes. They pick up and drop off people at different places on the route.
pick up：捡起；用车接……；获得，学到，得到；好转，改进；接收节目
Some examples：
1．Whose turn is it to pick the children up after school?
2．I picked up the kids' clothes that were lying on the floor．
3．My radio can pick up France．
4．The nurse had picked up the information from a conversation she overheard．
He some French while he was away on a business trip in Paris．
A．made out B．picked up C．gave up D．took in
