下列省区中，人口密度最低的是[ ]
A．江苏
B．湖北
C．广东
D．青海
答案：D
There are _________ doctors and nurses working hard in that hospital.
A．thousand
B．two thousand
C．two thousands
D．two thousands of
“咳而上气，喉中水鸡声”治宜（）
A.小青龙汤
B.厚朴麻黄汤
C.小青龙加石膏汤
D.射干麻黄汤
E.越婢加术汤
