Unit4AmazingScienceUnit4AmazingScienceTopic2Topic2WhenwasitWhenwasitinventinvented?ed?AmazingScienceWouldyouliketosaysomethingabou...
AmazingScienceWouldyouliketosaysomethingaboutthem?ComputerInvent/inAmerica/in1946ShenzhouⅥLaunch/inChina/in2005CloningExperiment/...
Unit4AmazingScienceUnit4AmazingScienceTopic2Topic2WhenwasitWhenwasitinventinvented?ed?AmazingScienceWouldyouliketosaysomethingabou...
Topic2Topic2WhenwasitWhenwasitinventinvented?ed?仆人,佣人确切,肯定家务劳动行为;守规矩贡献;捐款为……做贡献servantforcertainhou...