题目

Our environment isn't as green and beautiful as it should be.There are steel monsters blocking out the sun. blowing out dangerous smoke,and letting out poisonous chemicals into rivers,cars producing harmful waste gas, people throwing out waste in a wrong way and all other kinds of sources that ruin the planet.Facing current environmental problems,people need to do their best to save the earth. You cart see many big garbage dustbins in the streets.They're not there for a show,but for you to drop your waste.We should realize that what we do does count.So next time you get that urge to t5701的最高位是（_____）位,最高位上的数字是（_____）,最低位上的数字是（_____）。