下列哪种人不适宜用文字资料进行教学
A．病人家属
B．卧床病人
C．有视听障碍的病人
D．手术病人
E．生活不能自理病人
参考答案：C
—Shall we go skating or stay at home?
—Which ___ do yourself? [ ]
A. do you rather
B. would you rather
C. will you rather
D. should you rather
Venturi面罩的吸入氧浓度为（）。
A.21%～55%
B.24%～50%
C.21%～35%
D.35%～50%
E.52%～100%
skating or stay at home?