心脏杂音较局限不传导的器质性病变是（）
A.二尖瓣关闭不全
B.二尖瓣狭窄
C.主动脉瓣狭窄
D.肺动脉瓣狭窄
E.主动脉瓣关闭不全
参考答案：B
某企业年初从银行贷款100万元，期限1年，年利率为10％，按照贴现法付息，则年末应偿还的金额为（）万元。
A．70
B．90
C．100
D．110
— I don't think the campus is interesting, _____?
— _____. I agree with you. [ ]
A. is it; Yes
B. is it; No
C. do I; Yes
D. don't I; No
