可引起金属音调咳嗽的是（）
A.百日咳
B.急性肺水肿
C.支气管扩张
D.主动脉瘤
E.胸膜炎
参考答案：D
The number of people present at the meeting ________ about 1000, a large number of whom ________ experts from abroad.
A．was; was
B．were; were
C．was; were
D．were; was
吉尔贝（Gilbert）综合征所致黄疸的特点是（）
A.血中非结合胆红素升高
B.血中结合、非结合胆红素均升高
C.血中结合胆红素升高
D.血中非结合胆红素正常
E.血中结合胆红素正常
