青藏地区发展农业生产的限制性要素是( )
A:耕地不足
B:水资源不足
C:气候寒冷,热量不足
D:空气稀薄,不利于作物生长
⑴How can you get to the school ?____
⑵Happy birthday !____
⑶What's the weather like in summer ?____
⑷May I speak to Mike ?____
⑸Where is your aunt from ?____
A、It's cold .
B、Shenzhen .
C、Thank you .
D、Take bus No.4 .
E、Yes , speaking .