关于反向间接凝集试验说法错误的是（）
A.抗体致敏载体
B.用于检测标本中抗原
C.出现凝集为阴性
D.敏感性高
E.特异性强
参考答案：C
— I couldn't get through to you at home last night. You must have gone out then, ________?
— Yes, I went to the cinema. [ ]
A. mustn't you
B. haven't you
C. can't you
D. didn't you
经批准进入污染隔离区域作业时，应当穿（）或更换隔离区专用鞋以防止工作鞋被污染，退出该隔离区域时应该脱掉鞋套或换回工作鞋。
A.鞋套
B.防护眼镜
C.耳塞
D.布鞋
