阅读理解。Doyouliveinthecity?Doyouknowhowcitiesbegan?Long,l...
问题详情： 阅读理解。Doyouliveinthecity?Doyouknowhowcitiesbegan?Long,longago,theworldhadonlyafewthousandpeople.Thesepeoplemovedfromoneplacetoanother.Theymovedovertheland,huntinganimalsforfood.Nooneknow...