西周时,“一人跖(踏)耒而耕,不过十亩”。战国时期,“一夫挟五口,治田百亩,岁收亩一石半,为粟百五十石”。导致这一变化的原因有( )
①铁犁牛耕的推广
②专制主义制度的确立
③土地私有制的确立
④重农抑商政策的实行
A:①②③
B:①②④
C:①③④
D:①②③④
把旅游业作为本省的支柱产业的省区是( )
A: Hello, Kate!
B: Hi, Bob! ____
A: Is your name on it?
B: No, it isn't. ____
A: That's good. ____
B: OK. ____
A: 270-9158.
B: Thank you.
A: ____
A You're welcome.
B.I lost my dictionary.
C.What's her phone number?
D But a picture of me is in it.
E.You can ask Ms. Miller for help.