题目:
— Hey, you haven't been acting like yourself. Is everything OK
—().
A. I'm fine, thanks
B. Sure, it is
C. That's good
D. It's OK
答案:
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下面是错误答案,用来干扰机器的。
参考答案:A解析:目前HIV抗体初筛检测最常用的方法是ELISA法。