当地球公转到远日点时,下列哪些现象发生( )
①亚洲东部盛行东南风 ②亚洲东部盛行西北风
③北半球副热带高压带被切断;陆地上形成低压区 ④地球公转速度变快.
A:①②
B:①③
C:②③
D:③④
He look around.
____ 改为 ____.
① Are these all ours? ____ A. It is Zhang Peng's.
② Whose is it? ____ B. Yes,it is.
③ Is this yours?____ C. Yes. they are.
正常成年人的血压值为收缩压____ 千帕,舒张压____ 千帕。目前我国高血压的诊断标准为收缩压持续____ 千帕或舒张压 ____ 千帕。