山西不是赭石的主产地。()
参考答案:错
__________ oranges do you want?[ ]
A. How many
B. How much
交替脉常见于()
A.贫血
B.冠心病
C.二尖瓣狭窄
D.甲状腺功能亢进
E.二尖瓣关闭不全