Someofthegreatestproblemswefacetodayarethedestruction(破坏)ofourenvironmentsuchasbrowncloudspollutedwaterendangeredwildanimals...Theseproblemsseemsohuge.

 Somyfamilydowhatwecando.Wetakeclothbagstostoresinsteadofusingplasticbags.Ifwecanwalktoaplaceweneverdrivethere.

 Butdoesitdoanygood?WhenIamtheonlyoneinlineatthemarketwithclothbagsamIdoinganygood?Doesmywalkingtostoresmakeanyrealdifferencestotheworld?

 Irecentlylearnedsomethingaboutflamingos(火烈鸟)whichliketogettogetheringroupsofathousandormore.Everyyearwhenthetimeformigration(迁徙)comesafewofthemfirsttakeofffromthelake.Butnoneoftheothersseemtonoticesothesmallgroupreturns.Howevernextdaytheytryagain.Thistimeafewmoreflyalongwiththembutmostoftheothersstillpaynoattentionsotheyreturnagain.Theytryseveraltimes.Everytimeafewmorebirdsjoininbutsincethousandsofothersstilltakenonoticethegreatmigrationplanisoncemorestopped.

 Thenonedaysomethingchanges.Thesamesmallgroupofbirdsonceagainstartsflyingandasmallnumbermorejoininjustasbeforethenmore.Finallytheyalltakeflightandthemigrationreallybegins.Whataspectacularsightitmustbe―thousandsofflamingostakingoffintotheskyatthesametime!

 Afewcanmakeadifference.Evenifyou'retheonetotakethefirststepcontinuetryingandotherswillsomedaytakenoticeandtogetherwewillsolveevenourgreatestproblems.

( )1.Wherewouldyoumostprobablyreadthispassage?

   A.Inaguidebook.

   B.Inafilmposter.

   C.Inapersonalblog(博客).

   D.Inageology(地质)magazine.

( )2.Whydoesthewriteruseclothbagsinstores?

   A.Becausehewantstodosomethinggoodtotheenvironment.

   B.Becausehethinksplasticbagsaremoreexpensive.

   C.Becausethereareonlyclothbagsinstores.

   D.Becauseallthepeopleuseclothbagsinstores.

( )3.Whatdoestheunderlinedword"spectacular"inParagraph5probablymean?

   A.Frustrating.B.Surprising.

   C.Terrible.D.Fantastic.

( )4.WhichofthefollowingisTRUEaccordingtothepas