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.
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. | ||||
|