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1、星期3WednesdayRejoicinginhope,patientintribulation.从希望中得到欢乐，在苦难中保持坚韧。学习内容题材词数建议时间错误统计做题备忘TextA自然保护4605分钟/5TextB商业贸易4005.5分钟/5TextC历史事件5757.5分钟/5TextD社会管理4157分钟/5今日练习TextATheenvironmentiseverythingthatsurroundsus:plants,animals,buildings,country,air,water—literallyeverythingthatmightaffectus.Theenvir
2、onmentofatown,withitsbuildingsandtrafficanditsnoiseandsmells,whereeveryoneisontopofeveryoneelse,isafarcryfromthatofthecountryside,withitsfieldsandcrops,itswildanddomesticanimalsanditsfeelingofspaciousness.Andtheenvironmentdiffersindifferentpartsoftheworld.Ecologyisthescienceofhowlivingcreaturesand
3、plantsexisttogetheranddependoneachotherandonthelocalenvironment.Whereanenvironmentisundisturbed,theecologyofanareaisinbalance,butifacreatureisexterminatedoranunfriendlyspeciesintroduced,thentheecologyofthedistrictwillbeupset—inotherwords,thebalanceofnaturewillbedisturbed.Man,asapartoftheenvironmen
4、t,hasdonemoretoupsettheecologyduringhisshortspanonearththananyotherlivingcreaturewithhisignorance,greed,thoughtlessfoolishnessandwastefulness.Hehadpoisonedtheatmosphereandpollutedbothlandandwater.Hehassquanderedtheearth’snaturalresourceswithnothoughtforthefuture,andhasthoughtoutthemostsavagewaysof
5、killinghisfellowmen—andeveryothersortoflife.Sincemanhasdonesomuchdamage,itisuptomantoputmattersright—ifitisnotalreadytoolate.Ifthereistobeanyremedyforourills,thatremedyultimatelyliesinthehandsoftheyoung,andthesoonertheystartdoingsomethingaboutit,thebetter.Oneofthemaincausesoftheearth’stroublesisth
6、eworld’soverpopulationanditsgrowingatanever-increasingrate.Meanwhileweareusingupournaturalresources—fuelsandmineralores—atanever-increasingratewithnohopeofreplacingthem.Formanyyearstheearthhasbeenunabletoprovideenoughfoodfortheserapidlyexpandingpopulationsandthepositionissteadilyworseningsincethef
7、ertilityofsomeofourrichestsoilshasbeenlostandvastareasoncefertilehaveturnedintobarrendeserts.Andthetroublewithdesertsisthattheytendtocreepoutwardsontothefertilesoils.WhatisnowthenorthernSaharaDesertwasthecradleof
