用于肿瘤化疗后所致的严重中性粒细胞缺乏症选用
A．维生素B12B．叶酸C．硫酸亚铁D．红细胞生成素E．粒细胞集落刺激因子
参考答案：E
---- Have you heard that Peter rather than his parents _________ to Singapore?
---- Really? No wonder I haven’t seen her.
A．has been
B．has gone
C．have gone
D．have been
维生素D缺乏性手足抽搐症多见于
A．6个月以内小婴儿
B．2岁以上幼儿
C．新生儿
D．1岁以上小儿
E．以上都不是
