下列各项中属于正确食物链的是( )。
A:青蛙→蛇→猫头鹰
B:草→食草昆虫→青蛙
C:阳光→草→食草昆虫
D:草←食草昆虫←青蛙
古诗文默写。
If you want to change the world, you _________ change yourself first.
A: Excuse me! ____
B: Yes. Please keep your desk clean.
A: ____
C: Wow! Your picture is so beautiful!
B: ____
C: Oh, I'm sorry. ____
B: Sure!
C: ____
B: Yes, work quietly.
A. Can I write my diary here?
B. May I use your pencil?
C. Anything else?
D. OK. I will.
E. Be quiet, please!