快 1.一个有理数乘以——原数,乘以——的原数的相反数
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快 1.一个有理数乘以——原数,乘以——的原数的相反数
快 1.一个有理数乘以——原数,乘以——的原数的相反数
快 1.一个有理数乘以——原数,乘以——的原数的相反数
1 -1
Dear fellow students,
There is a serious phenomenon in our school. Many students like to eat snacks very much. We can see that there are so many students that bussinessman can’t wait to sell so...
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Dear fellow students,
There is a serious phenomenon in our school. Many students like to eat snacks very much. We can see that there are so many students that bussinessman can’t wait to sell something. In the school, we find that there are a lot of rubbish about snacks on the playground and so on. Eating too much snacks is bad for us. It will not only waste our money from parents, but also attack our school environment. We should understand that we must protect environment. Believe it or not , we should stop to eat snacks in the school. Otherwise, teachers will phone to your parents. We should protect environment. If you want to eat something, I suggest you eat some fruit.
Do you think so? We will be beter。
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