问题
单项选择题 A1/A2型题
单向琼脂扩散试验应属于（）。
A.间接血凝试验
B.补体结合试验
C.沉淀反应
D.免疫荧光试验
E.ELISA
答案
参考答案：C
解析：琼脂扩散试验利用可溶性抗原和相应的抗体在凝胶中扩散，形成浓度梯度，在抗原与抗体浓度比例恰当的位置上形成肉眼可见的沉淀线或沉淀环。
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单向琼脂扩散试验应属于（）。
A.间接血凝试验
B.补体结合试验
C.沉淀反应
D.免疫荧光试验
E.ELISA
参考答案：C
解析：琼脂扩散试验利用可溶性抗原和相应的抗体在凝胶中扩散，形成浓度梯度，在抗原与抗体浓度比例恰当的位置上形成肉眼可见的沉淀线或沉淀环。
| 根据对话内容从方框内所给的选项中选出最佳答案，使对话完整。注意：有多余选项。 | |
| Boy: Who do you admire (崇拜)? Girl: 1 Boy: Midori? Who's that? Girl: 2 Boy: Oh, yeah! She's Japanese, isn't she? Girl: Yes, she was born in Osaka in 1971. 3 When she was fourteen, she toured the United States. I saw her play when I was eight. Boy: Wow. 4 Girl: Yes, I do. I play them all the time. How about you? Who do you admire? Boy: I admire my grandmother, Laura. Girl: 5 Boy: Well, she was born in Russia in 1932. She was an unusual girl because she started ice skating when she was four, and she became a skating champion when she was ten. | |
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