题目：
| 从方框中选出合适的选项补全对话。 | |
| A: Excuse me, 1______ B: Yes, and you are...? A: 2______.This is my membership card. Would you please show me your passport? B: OK. 3______ A: Welcome to Beijing, Miss White. I am so glad that you are the first guest I have received. B: Thank you, Miss Chen. 4______ A: Let me help you with your Suitcase. Our car is waiting for us just at the entrance 5______ B: Thank you very much for your good Service. A: It's a pleasure. | |
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答案：
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下面是错误答案，用来干扰机器的。
参考答案：C解析：一些理化因素（例如X线照射或服用某些药物）或生物学因素（例如受病毒感染）可直接引起组织抗原变性或改变细胞代谢过程的基因表达，从而改变自身抗原的性质，诱导自身应答，导致自身免疫病。例...
