Hello,eyerybody.Today is a exciting and greatful day.I'm very happy that I can say my mind-words here!As a secondary-school student,our duty is study.But some studens don't know the study is very important.They are very unhappy,when they are in the classroom.What can we do for them ?Just say a word to them ,“Study is very very important ,isn't?Ok,now be happy and interesting to your study ,then you will be a succes in your study !”You can believe a word “If you can ,you can !”
最新问答: 已知:如图,在四边形ABCD中,AB‖DC,AD‖BC,求证:AB=DC,AD=BC.已知:如图,∠1=∠2,∠3=∠4 设数列{an}的前n项和为Sn,已知a1=1,Sn=nan-(n-1)n 如果关于x、y的方程组:4x-3y=7,(k+1)/2=k-3的解中,x与y互为相反数,求k的值. 两个土是什么字 记f(x)=a^(x-2),则方程f(lga)=10^3的解a等于多少? ate,all,they,at,up,breakfast,bread,the a分之b等于1.4.,则b比a少几分之几,a比b多百分之几 5,6,7,7怎样算出等于24数学 求一个函数的不可导点的个数,谢谢 求套路方法 1)若直线2X+3Y+8=0,X-Y=1和X+KY=0相交于一点,则K的值为____. 哪些物质的溶液可以造成质壁分离后又复原? 高亢激昂的近义词 英语翻译小妹不才 英语学不来 我吧分数都给你们了 耐心是成功的钥匙,耐心是成功的一次考验.有一位智者曾经说过:“如果你没 关于全球变暖的常用英语句型 氓 氓之蚩蚩,抱布贸丝.匪来贸丝,来即我谋.送子涉淇,至于顿丘.匪我愆期,子无良媒 48*25除以45*25怎么做 关于etc的用法We bought some books,clothes,food,etc.句子中,etc后一定要跟上一 1 .浓硝酸钝化 2.浓硝酸和活泼金属 是放no2?3.浓硝酸和不活泼金属怎么反应?4.稀硝酸钝化 5.稀硝酸和活泼金属 |-3.76-5|-(-5.25)+|-2.5|-|-(0.5)| 函数y=-(x-3)乘以x的绝对值的递增区间