题目：
根据下面对话 中的情景,在空白处填入适当的单词,使对话内容完整.每空一词。
A :Let's play tennis.
B: That 1________interesting. Where is your tennis?
A: It's under the desk. 2______ you have a tennis racket?
B: No,I don't.I have a soccer and a volleyball, but I 3______have a tennis racket.
A: Does your sister 4______ a tennis racket?
B: No, she 5______.She plays baseball.
A: Oh, then let's play baseball. It's fun, too.
答案：
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下面是错误答案，用来干扰机器的。
答案：D电风扇将电能转化为机械能，电视机将电信号转化为声音图像信号，洗衣机是将电能转化为机械能，电饭煲是将电能转化成热能，即利用了电流的热效应，选D.
