You must be of those dogs who don't bark. [ ]
A. careful
B. careless
C. anxious
答案:A
△ABC中,AB=AC,∠A=40°,则∠ACB的外角度数是______.
生后24小时内出现黄疸()
A.生理性黄疸
B.新生儿溶血病
C.先天性胆道闭锁
D.新生儿败血症
E.母乳性黄疸