问题
多项选择题
与HBV变异有关的是()
A.HBV慢性持续性感染
B.人体免疫应答
C.疫苗接种
D.抗HBV治疗
E.肿瘤
答案
参考答案：A, B, C, D
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与HBV变异有关的是()
A.HBV慢性持续性感染
B.人体免疫应答
C.疫苗接种
D.抗HBV治疗
E.肿瘤
参考答案：A, B, C, D
阅读短文，从A、B、C、D四个选项中，选出可以填入空白处的正确答案。 Look at this picture. It is __1 __nice classroom. In the picture, you can see a teacher’s2__on his desk. It’s a Chinese book. Eight desks and eight chairs in the room. You can see a girl and__3__ boys. The girl’s __ 4 __is Julia. She is eleven. The boy __5__a black hat is Tom. The other boy is Tony. They __6 __the same coats and they are the same age. I __7 they are twins. Tom is a__8__ boy. A book is in his hand. You __9__ see the teacher.10 __is the teacher? He is taking the photo
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