问题
选择题
已知m≠n，按下列A，B，C，D的推理步骤，最后推出的结论是m=n，其中出错的推理步骤是（ ）
|
答案
A、（m-n）2=（n-m）2是正确的，故选项正确；
B、
=(m-n)2
正确，故选项正确；(n-m)2
C、只能说|m-n|=|n-m|，故选项错误；
D、由C可以得到D，故选项正确．
故选C．
搜题请搜索小程序“爱下问搜题”
已知m≠n，按下列A，B，C，D的推理步骤，最后推出的结论是m=n，其中出错的推理步骤是（ ）
|
A、（m-n）2=（n-m）2是正确的，故选项正确；
B、
=(m-n)2
正确，故选项正确；(n-m)2
C、只能说|m-n|=|n-m|，故选项错误；
D、由C可以得到D，故选项正确．
故选C．
| 完形填空。 | ||||
| Many young people today care about the way they __1__ . They often buy “designer” clothes __2__ they think they look cool. Then the__3__ well-known companies make clothes which look the same. But they don’t sell __4__ well because they don’t have the __5__ . People __6__ think designer clothes are better made. For example, many people think the right running shoes will make you run faster or play better. Of course, this is not always 7 .It’s the 8 – not the trainers – that improves your speed or your score. 9 that’s not the point. People believe that it’s true … and then 10 the shoes. The big companies only want to make a lot of money. | ||||
|