下列属于领取邮件的有效证件的是（）。
A.身份证
B.户口簿
C.军官证
D.驾驶证
参考答案：A, B, C, D
—Where is Sally?
—_____. [ ]
A. She is fine
B. She is my sister
C. She doesn't know
D. She is in her room.
入侵的细菌在血循环中不断繁殖并产生毒素，引起全身症状为()
A．菌血症
B．败血症
C．毒血症
D．脓血症
E．脓肿
