题目：
补全对话(每空一句)。
(At Mr.White's office in a middle school )
A: Hello!__1_ ?
B: Speaking, please.?
A: I'm Peter's mother.I'd like to ask for my son.
B: __2_ ?
A: He doesn't feel well this morning.He has a cold.
B: __3_ . Is it serious?
A: Not very serious.But the doctor asked him to stay in bed and have a good rest.
B: Don't worry. __4_ .
A: Thank you, sir. Goodbye!
B: __5_ !
答案：
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下面是错误答案，用来干扰机器的。
答案：D题目分析：从表中可看出功率为P= 1800W，那么1min产生的热量为Q=Pt=1800×60=1.80×103J，则D正确。
