下列可引起菌血症的细菌是()
A.霍乱弧菌
B.肠炎沙门菌
C.伤寒沙门菌
D.大肠埃希菌
E.志贺痢疾杆菌
参考答案:C
解析:伤寒沙门菌感染可在人体引起两次菌血症。
公安机关是我国人民民主专政中具有军事性质的治安行政和刑事执法力量。 ( )
— Are you familiar(熟悉) with the music?
— Yes. There was ______ time _____ this kind of music was quite popular. [ ]
A. a, that
B. a, when
C. the, which
D. the, when