I like Tianjin because it is my home town and it's also one of _____ China.       [ ]

A. the cities      

B. the big cities  

C. the biggest    

D. the biggest cities

女孩，4个月，冬季出生，足月顺产，单纯牛奶喂养，近半月来较烦躁，夜间睡眠不好.门诊体检时特别应注意的体征是（）

A.方颅

B.颅骨软化

C.串珠肋

D.鸡胸

E."O"形腿