我国四大干湿地区中，以旱地为主的耕地主要分布在（ ）
A：湿润地区
B：半湿润地区
C：半干旱地区
D：干旱地区
—Boy, you ____ lean (伸) out of the window while the bus is running. That's dangerous.
—Sorry, I won't do that again.
