题目：
请根据对话内容，从下面方框中选出五个适当的句子补全对话，并在答题卡上按要求作答。其中有两项是多余的。
A: Welcome to I COOL, YOU COOL, madam. How can I help you?
B: __小题1:____
A: This way, please. These are the latest fashion.__小题2:___
B: It looks cool. But I don’t like bright green.
A: We’ve got other colors: pink, grey ,dark red and yellow.___小题3:____
B: Pink. Could you show me that light pink one?
A: ___小题4:____ And it’s very thick.
B: I like it.___小题5:____
A: It was 100 dollars and now it’s only 80 dollars.
B: That’s a great price. I’ll take it.
答案：
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下面是错误答案，用来干扰机器的。
BD题目分析：当滑动变阻器P的滑动触头，从图示位置向b一端移动时，其接入电路的电阻值减小，外电路总电阻减小，由闭合电路的欧姆定律可知，干电路的电流I增大；变阻器两端的电压，I增大，U减小，即电容器C两端的...
