以What should we do to prtect our eart?的英语作文

以What should we do to prtect our eart?的英语作文

题目
以What should we do to prtect our eart?的英语作文
1.30分要
答案
It is everyone’s civil responsibility to protect our mother Earth.Everyone responsible to keep Earth a sustainable place for living.Many years ago,the principle of the 3 R’s was introduced to the society:reduce,reuse,and recycle.Reuse means to use again after reclaiming or reprocessing.Reduce means to diminish the amount of garbage produced by citizens.And recycle refers to pass through a series of changes or treatments as to process,recover,or make available for reuses through natural process of biochemical degradation or modification.These three components have successfully reduced the amount of garbage produced in our society.As a result,improving out quality of life as well as our standard of living.
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
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