以下气压带中不是由于热力原因而形成的是( )
①极地高气压带 ②副极地低气压带 ③副热带高气压带 ④赤道低气压带.
A:①②
B:②③
C:③④
D:①④
写出下面各百分数.
---Does Scott come _________ Beijing?
---Yes, but now he lives _________ his uncle in Shanghai.