AV Clip 12 : Obesity and Dementia AV 12 Obesity and Dementia.avi Watch the video clip three times and give an answer as short as possible to each of the following questions according to the information from the video clip.
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参考答案:
举一反三
【简答题】设计一个程序,计算表达式 a 2 +2ab+b 2 的值,其中 a和 b 的值都从键盘输入。