问题:BenandhisclassmatesarewatchingaDVDabouttheenvironment.Thisistheintroductiontothevideo,wherethenarratorexplainswhattheDVDisabout.Alongtimeago,mosttownsandvillageswereverysmall.Thenumberofpeoplewhol
答案:↓↓↓ 陆徐福的回答: 网友采纳 【分析】1.由文中“Peopledidnotusechemicals.Therewerenomotorvehicles.Therewerenofactories.Therewas,therefore,verylittlepollution”,可知过去污染环境的因素很少。 2.由文中“Therewasnoheavyindustry,onlyagricultureandartsandcraftsandnoneofthesethingsdamagedourenvironment”可知答案。 3.文中第四段中有“Theairisfullofpollutantsofallkinds—smokefromcarsandfactoriesandsuchthingsasinsectsprays”,空气中掺杂很多的污染物。 4.文中“Thismeansthatwearegraduallydestroyingoneofourmajorfoodsources—theoceansoftheworld”,因为海洋是我们食物的主要来源。 5.文中最后一段“IntheDVDwewilltrytofindwaystomakeourenvironmentcleanerandwaystostopfuturepollution”,显然findwaystomaketheenvironmentcleanerandstopfuturepollution项正确。 6.总结上下文可以看出先是对过去的描述,然后与现在对比,就是为了证明现在的污染加重了很多。 |