1、Unit 5听说训练BCBCACCCSpring./He likes spring best.At a restaurant./They are at a restaurant.Cotton./A hundred percent cotton./They are made of(a hundred percent)cotton.Soft./Very soft./It feels very soft.A washing machine./She wants to buy a washing machine.createdbillionusedcitiestopcreated its first
2、highspeed railway line.Since then,the numberof passenger trips has grown by over 30 percent every year.By 2016,more than 5billion trips had been taken on Chinas highspeed trains.By 2020,about onefifthof the countrys railway network was used by highspeed trains.This network linksmore than 80 percent of major cities across China.China is now working on the nextgeneration highspeed trains that have a top speed of 400 kilometers per hour.
