恰同学少年,____;书生意气,____。(***《沁园春·长沙》)
A. When
B. Why
C. in
D. What
Mike: ____ is your favourite season ,Sarah?
Sarah: Summer.
Mike: ____ do you like summer?
Sarah: Because we wll have a party at home 0n Children's Day.
Mike: ____is Children's Day?
Sarah: It's ____ Jane.
能正确表示一条食物链的是( )
关于青蛙的叙述中错误的是 ( )