There are _____________ hours in a day. [ ]
A. twelve
B. twenty-four
C. sixty
答案:B
The weather in Guiyang in summer is ______than that in Tongren. They’re different .
A.cool
B.muchcooler
C.hot
D.much hotter
早产儿胎龄34周,生后2h出现呼吸困难、呻吟,胸片提示肺透明膜病早期,应先给予下列哪一项处理
A.地塞米松
B.头罩吸氧
C.纠正酸中毒
D.气管插管,机械通气
E.持续气道正压呼吸(CPA