智能正常，骨龄落后是（）
A.甲状腺功能减低症
B.生长激素缺乏
C.先天性肾上腺皮质增生症
D.体质性发育迟缓
E.中枢性性早熟
参考答案：B
That________my first visit to Hong Kong,I didn't know where I should go first.There were so many
things to enjoy.[ ]
A. was
B. being
C. to be
D. to have been
治疗院内感染的抗生素最好是选择（）
A.万古霉素
B.第四代头孢菌素
C.亚胺培南
D.第三代头孢菌素
E.根据药敏试验结果选用
