急性胃黏膜病变出血()。
A.烧伤患者出现黑粪
B.肝硬化患者用力排便后出现呕血、黑粪
C.节律性中上腹痛,突然出现黑粪
D.因腰痛自服布洛芬(芬必得)后出现黑粪
参考答案:D
不发生垂直传播的病毒是()。
A.风疹病毒
B.巨细胞病毒
C.乙型肝炎病毒
D.人免疫缺陷病毒
E.脊髓灰质炎病毒
-I'm a teenager's mother. Sometimes I don't know __________.
-Love and be understanding.[ ]
A. what my son needs most
B. what does my son want to get
C. why my son gets annoyed very often