问题
单项选择题 B1型题
用于AIDS诊断的试验是（）
A.酶免疫印迹
B.荧光抗体技术
C.胶体金免疫层析
D.ELISA
E.PCR技术
答案
参考答案：A
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用于AIDS诊断的试验是（）
A.酶免疫印迹
B.荧光抗体技术
C.胶体金免疫层析
D.ELISA
E.PCR技术
参考答案：A
| 根据对话内容，选择方框中所给词的正确形式填空。 | |
B: Fine. Thanks. And you ? A: I'm quite fine ,too. Where 1. ________ you go for your summer holidays? B: I went back to my hometown to see my 2.________ with my father. We hadn't seen them 3.________ half a year and my grandparents were 4. ________ and excited to see us. A: How long did you stay there? B: We stayed there for a 5._________ and I visited all my old friends. When I was a boy, I 6.________ a young tree in front of my old house and now it has 7._________ a tall big tree. How happy I was to see such a tall tree! A: Oh, what a wonderful holiday you've got! B: Yes, I think so. |