Now the Internet use of more and more general.A young man the habit of the Internet every day.The Internet was invented in order to facilitate people to use,but someone take this to crime.Teenagers often hope the attention and make new friends,so they will be through the Internet to expand their circle of friends.Now network swindlers,more and more the enjoyment of the Internet in the should also be pay attention to safety.
最新问答: 醇的催化氧化反应是否有条件(物质本身的内在条件) 根据下列这段话回答问题人生,起伏跌宕,自己的命运掌握在自己的手中.成功的时候,要沉着冷静,不要被胜利冲昏头脑.失败的时候 已知数列{an}的前n项和是Sn(n∈N^*),a1=1且Sn*SN-1+1/2an=0. 9,970,610这个数字,用英语怎么读?谢 求y=5x²+8x+5/x²+1的值域 解方程组,快2(x+1)=y+15(y-1)=3(x+5)不好意思,弄错了,是2(x-1)=y+1 5(y-1)=3(x 并联电阻怎么算例如:R总=1/3+1/2+1/4=4(二者之积除以二者之和)但欧姆定律上计算为:1/R1+1/R2+1/ 解一元二次分式如何解 x-1/mx-1>0 甲乙同时从AB两地出发 相向而行 3小时后相遇 两地相距24千米 速度比为2:3 peter is( five)对括号内提问 用4个7和4个0组成的只读三个零不读的八位数 to,at,toward的区别是什么? 英语翻译原句子是这样的:Voted one of the top ten affordable artists in t 引力有速度比光速快么 injure和wounded区别 总结三线共点,还有三点共线的方法,主要有例题……说明 内人,敝人, 句子It is raining cats and dogs now.句中的 cats and dogs Al(OH)3如何变为Al2O3? 1.甲厂与乙厂共缴税112万元,已知甲厂缴税金额的4/9与乙厂的2/7共42万元,两厂各缴纳多少万元?