问题
选择题
Buses have routes. They ________ and ________ people at different places on the routes.
A.take on, get off
B.pick up, drop off
C.take up; take off
D.pick out; drop out
答案
答案:B
考查短语辨析。pick up上车;drop off下车。句意:公共汽车都有固定的线路,人们可以在其线路上的各停车点上下车。