More and more students love surfing on the Internet after school. They think surfing the Internet can bring them happiness, they feel very relaxed when they watch programmes online or just simply read news. The Interent can give them a lot. It tells them what's happening around the world. What's more, they believe they can turn to the Internet for help when they have problems doing their homework.But some parents are worried about this. They are afraid students are putting too much time on the Interent. They know the Interent not only has good things, but also may bring bad things to students.I think we should learn how to use the Internet in the right way.
最新问答: as far as,as long as,as well as,as often as 相似三角形边成比例如何证明 1.(2x的平方)的立方—6x的立方(x的立方+2x的平方+x) 2.(x+y+z)(x+y-z) 比例的意义和基本性质有两个比的比值都是4.5.已知第一个比的前后项之差为14,第二个比的前后项之和是44,用这两个比组成 不知比热容时怎样求物体混合后的共同温度 求4道数字题的推理过程1. 3 8 11 20 71 ( ) A.168 B.233 C.91 D.3042.8 8 ( 小峰家种了一片麦子,经农科人员测定该土壤需补充钾元素39千克,氮元素42千克.那么,至少小峰需购买硝酸钾、硝酸铵各多少千 在线求指导:据《吕氏春秋》记载: 海南旅游英语作文或者海南风景 明天要交如图已知在Rt△ABC中,∠ACB=Rt∠,以斜边上的高线CO于斜边AB为轴建立直角坐 若关于x的不等式ax>b的解集为x0的解集为_____ 一辆全长为250M的火车以每小时120公里的速度 穿越全长为500M的隧道大约需要的时间是多少? 已知:四边形ABCD中,AB=DC,AC=BD.试探索四边形ABCD可能是什么形状的四边形 关于高中函数基本性质的问题,急已知f(x+2)=x²+2x-1,则f(x)=? 这次期末考试才75分,我很着急,有什么办法让他把数学提高 维多利亚的秘密英文怎么写 2.0千克等于多少斤? 我现在初一,对于英语的语法不是很懂,有什么方法能学好语法? 二次函数y=f(x)满足f(0)=f(2),X1,X2是方程f(x)=0的两实根,则x1+x2+? 问到数列的题数列9,99,999,.的前n项和为多少,求详解