正确的操作顺序是( )
A:①②③④⑤
B:⑤①③②④
C:①④③⑤②②
D:④①③②⑤
名著阅读。
____ ____ favourite subject?
Try to guess its meaning when you meet a new word. Don't _____ your dictionary all the time.
下列关于北极地区和南极地区的叙述,正确的是 ( )