A:Because he wants to watch the game.
B:Because he wants to help other people.
C:Because he wants to be a guide.
面对竞争的失利,小凯通过听听轻音乐、到操场散散步的方式来调节自己的情绪。小凯调节情绪的方法是( )
下列有关微生物的说法正确的是( )