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1、Unit4ANIMALEXTINCTION一.课文感悟与探究：Manyanimals1.（disappear）during2.（这段漫长时期）oftheearth.Themostfamousoftheseanimalsare3.（恐龙）.Theylivedontheearth4.（千百万）ofyearsago,longbeforehumans5.（形成）andtheirfuture6.（在另0时看起来很安全）.Therewere7.（许多不同种类的）dinosaurandanumberofthem8.（曾经）liveinChina.Theeggsoftwenty-fivespe
2、cieshavebeenfoundinXixia,County,Nanyang,HenanProvince.9.（不久前）ararenewspeciesof10.（形状像鸟一样的恐龙）was11.（discover）inChaoyangCounty,LiaoningProvince.Whenscientists12.（观察）thebones,they13.（surprise）tofindthatthesedinosaurscouldnotonlyrunliketheothersbutalsoclimbtrees•Theylearnedthisfrom14..（恐龙骨骼的连接方式
3、）.Dinosaurs15.（灭绝）suddenlyabout65millionyearsago.Somescientiststhinkitcameafteran16.（意夕卜事故）when17.（宇宙间一块巨石击屮地球因而在空气中扬起大量尘土）・Othersthink]&（地球变得太热，因此恐龙无法在地球上生活了）.Nobodyknows19.（确切地）whyandhowdinosaursdisappearedfromtheearth20.（在这么短的时间里）.Weknowmanyotherwildplants,animals,insectsandbirdshavediedo
4、utmorerecently.21.（根据）aUNreport,some844animalsandplants22.（disappear）inthelast500years.Thedodoisoneofthem.ItlivedontheIslandofMauritiusandwasaveryfriendlyanimal.Pleaselistentoastoryofthedodoandhowitdisappearedfromtheearth.二•阅读理解ALittledidIknowthattheboyIknewinmiddleschoolwasdepressed（抑郁的）.Ne
5、verdiditoccurtomethathehadjustmissedtheknockofdeath.Itallhappenedbeforeabiologyclass,whenmyfriendsittingnexttomeaskedifIknewwhathadhappenedtoJackthenightbefore.Isaidno.ShethenpulledupherFacebookpageinhermobilephone,andshowedmeJack，spost:hestolehisbrother^carandcrashed（撞）itagainstthewallonthe
6、highway一onpurpose.InAmerica,whateverispostedonFacebookisforeveryonetotalkabout,andtoday'stopic,ofcourse,wasaboutJack.Tome,however,Ifeltaresponsibilitytoachieve.AsaneditorofmyhighschooPsnewspaper,Ithoughtitwasmydutytocoverwhathadhappened.Iwouldusethispowertospreadtheawarenessofdepression（抑郁症）
7、.Ibegantowritemyarticle.Iresearchedintodepression.Icollectedreallifestories.AtfirstIwasafraidthatitwouldbedifficulttointerviewthestudentswhoweresufferingfromdepression,buttheyreachedouttome,andgavemein-depthanswers.Theydescribedhowbadtheymightfeela
