中药贮藏过程中常见的变质现象（）
A.走油
B.生霉
C.变色
D.虫蛀
E.鼠害
参考答案：A, B, C, D
– I called you yesterday evening, but there was no answer.
--Oh, I am sorry. I __________ dinner in my friend’s home.
A．have
B．had
C．was having
D．have had
下列不引起咯血的疾病是（）
A.支气管扩张
B.鼻出血
C.肺结核
D.风湿性心脏病二尖瓣狭窄
E.白血病
