求英语作文速度来额1.要求做一个实用的小发明多功能的最好2.描述你发明的这个工具的用途3.如何推销给你的同学各位大虾给点

My new invention: the near future, I will have a new invention! Recently, I saw frequently mother boils water, on that pot always has the residual, I use teacher protestantism, expand with heat and contract with cold's principle, burns very much the first pot hotly, then pours into the cold water again, only listens, sound of something being struck or falling to the ground! , In pot's residual, has not had, this is my innovation! And for its convenience, I have the confidence that my classmates would like it. Because after they hear my story about it and see it, they will like to have one for their mothers.