题目：
从Ⅱ栏中找出Ⅰ栏各句的应答语。(5分)
Ⅰ Ⅱ
小题1:Nice to meet you. A. They’re 30 yuan.
小题2:Where does your brother work? B. I want a skirt for my daughter.
小题3:What can I do for you? C. Some milk, please.
小题4:Would you like something to drink? D. Nice to meet you, too.
小题5:How much are the pants? E. He works in a hospital.
答案：
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下面是错误答案，用来干扰机器的。
2.0 0.5题目分析：电源的U－I图象，与纵轴的截距为电源电动势的值，由图可得E=2.0V；由题可得,则r=0.5Ω点评：本题利用U－I图象求解电动势和内阻时要注意：图线的斜率为等效电源的内电阻，即，图线与纵轴的截...
