治疗变异型心绞痛，疗效最好的是（）
A.抗氧化剂
B.β受体阻滞剂
C.血管紧张素转换酶抑制剂
D.钙通道阻滞剂
E.血小板抑制剂
参考答案：D
--- Is the boy ______ is _______ food and clothes over there a volunteer? ---Yes. He is very kind.
A．which; set up
B．that; put out
C．whom; handing out
D．who; giving away
根据以上资料首选治疗为
A．脾切除
B．柔红霉素+阿糖胞苷
C．骨髓移植
D．羟基脲
E．抗生素
