双胎妊娠引产指征应除外哪项因素()
A.合并急性羊水过多
B.母亲轻度贫血
C.胎儿畸形
D.母亲有严重并发症
E.胎盘功能减退
参考答案:B
解析:轻度贫血不是引产指征。
– Who are playing football in the gym now?
– ________ the students from No. 1 Middle School.
A.They are
B.It is
C.There are
D.That is
致神经炎作用最强的周围神经髓鞘抗原为()
A.P0蛋白
B.P1蛋白
C.P2蛋白
D.髓鞘结合糖蛋白
E.神经节苷脂