若b＜0，则a+b，a，a﹣b的大小关系为 [ ]
A.a+b＞a＞a﹣b
B.a﹣b＞a＞a+b
C.a＞a﹣b＞a+b
D.a﹣b＞a+b＞a
答案：B
Only after he was brought to the police station did the young man ________ he had stolen some purses from other passengers.
A．participate
B．realize
C．summarize
D．acknowledge
下列符合流行性出血热诊断的临床表现是（）
A.突然发病
B.头痛腰痛
C.热退症状加重
D.出血性皮疹
E.球结膜出血
