治疗新生儿衣原体肺炎，应首选哪一种抗生素
A．青霉素
B．头孢唑林
C．红霉素
D．丁胺卡那霉索
E．氨苄青霉素
参考答案：C
I got close enough to hear them speaking Chinese, and I said "Ni Hao,"just as I________do in China.[ ]
A. must
B. might
C. can
D. should
泄露射线量率单位是（）
A.mm
B.kg
C.Gy/h
D.m
