If I can help____________ , I prefer living in Hangzhou because the weather here is better than ____________of Changsha.

A．that; that

B．it; that

C．that; one

D．it; it

轻度或中度高血压患者，手术前应使血压（）

A.降至正常

B.维持原水平

C.降至原水平低点

D.降至正常水平点以下

E.以上都不是