下列药物不是二线抗结核药物的是()
A.乙胺丁醇
B.阿米卡星
C.异烟肼对氨基水杨酸盐
D.氧氟沙星
E.丙硫异烟胺
参考答案:A
--- How long has your mother ______ Beijing?
--- About two weeks. But she will come back tomorrow.
A.been to
B.been in
C.gone in
D.gone in
胰岛A细胞可分泌()。
A.胰多肽
B.胰高血糖素
C.生长抑素
D.胰岛素
E.胃泌素