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1.变化:随着斧子的出现和使用,
①曾经优美的自然环境被破坏。由“上的森林郁郁葱葱,村前河水清澈见底,天空湛蓝深远, 空气清新甜润。”变为了“山坡上的树木不断减少,裸露的土地不断扩大”,木材燃烧污染空气。
②村民的生活条件改善。有了家具,燃料等生存资源。
③最终,生态的破坏导致了洪灾摧毁了村庄。由于过度砍伐,森林调蓄洪水的功能退化,使村民自食破坏生态的恶果,掠夺的最终也被自然带走。
2.大雨没喘气:大雨一连下了五天五夜,中间没有停歇。
3想说:①发展要建立在保护基本生态环境的基础上,进行可持续发展(sustainable development),否则只会适得其反。
②要进行科学知识的学习,了解森林的作用,如保持水土、调蓄洪水、净化空气等,并了解过度砍伐的危害。
③可以利用除木材以外的其他能源代替。如天然气,燃煤等。
④我们只有一个地球。
0 votedJuly 26, 20160- How to communicate with native speakers I really admire people who has good pronunciation,but when I have chances to talk to native speakers,I always get nervous.Worrying about making mistakes,I can hardly catch the opportunity to communicate with them. Is this a general problem?What should I do to overcome it?July 21, 2016161

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