该患儿的治疗药物首选
A．维生素D
B．钙剂
C．甲状腺素
D．特殊饮食疗法
E．胃肠动力药
参考答案：C
—Jim has a pen pal from America.
—_________. My pen pal lives in New York.
A．So has I
B．So do I
C．So I have
D．So I do
止血有什么意义？常用哪几种方法？
