The population has _______ from 1.2 million to 1.8 million.
A：dropped
B：increased
C：checked
你认为目前很多青少年出现肥胖的主要原因是（ ）
关于东北三省描述错误的是（ ）
After working all day，he was so tired that he was in no______to go to the party with us.
被鲁迅先生称之为“史家之绝唱，无韵之离骚”的著名史学著作是( )
