肺炎患者痰标本为黄色脓痰、黏厚,可能感染了()
A.肺炎链球菌
B.葡萄球菌
C.肺炎克雷伯菌
D.铜绿假单胞菌
E.链球菌
参考答案:B
----How many pens would you like, Madame?
----Well, I want _______ these.
A.three dozen
B.three dozen of
C.three dozens
D.three dozens of
登革热的潜伏期通常为()
A.2~5天
B.3~15天
C.8~11天
D.11~14天
E.14~17天