慢性咳嗽伴大量脓痰多见于()。
A.支气管哮喘
B.上呼吸道感染
C.支气管肿瘤
D.支气管内膜结核
E.支气管扩张
参考答案:E
It was _____ he said _____ made me happy. [ ]
A. what, that
B. that, what
C. who, where
D. that, that
以()为唯一碳源的培养基中,产黄青霉菌体生长良好,但青霉素合成量很少
A、麦芽糖
B、蔗糖
C、葡萄糖
D、乳糖