同学与同学之间正常的关系主要是下列哪一种( )
A:捕食
B:竞争
C:合作
D:既有合作又有竞争
将下列图片和句子配对。
① Where are my books? ____ A. I'm from Shanghai.
② Do you like apples? ____ B. No, I don't.
③ Where are you from, John?____ C. They are in your bag.
读“中国政区及四至点(最东、最西、最南、最北点)简图”,完成下面小题.