肥厚型梗阻型心脏病，可使杂音减轻的是（）
A.硝酸甘油
B.活动
C.异丙肾上腺素
D.β受体阻滞剂
E.站立
参考答案：D
巴戟天、淫羊藿与仙茅均具有的功效是（）
A.益气养血
B.补肾助阳
C.强筋健骨
D.活血祛瘀
E.温通经络
Iceland has the oldest parliament, which goes as far back to 930 A.D. when Althing, the legislative organization , was established.
A．office
B．adobe
C．assembly
D．building
