The train leaves at and arrives at .A. 10 a.m.;9 p.m.B. a.m.10;p.m.9C. ten a.m.o’clock;

The train leaves at and arrives at .
A. 10 a.m.;9 p.m.
B. a.m.10;p.m.9
C. ten a.m.o’clock;nine p.m.o’clock
D. 10 a.m.in the morning;9 p.m.in the evening

(答案→)A. 10 a.m.;9 p.m.B. a.m.10;p.m.9C. ten a.m.o’clock;nine p.m.o’clockD. 10 a.m.in the morning;9 p.m.in the evening解析：a.m.（或A.M.）,p.m.(或P.M.)分别表示“上午（或午前）”、“下午（或午后）”。

好好学习下