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1、Unit2SailingtheoceansUsingLanguageⅠ.单词拼写1．TheRedArmymensufferedmanyhardshipsduringtheLongMarchwithlittletoeatandwithoutwarmclothes.2．Gradually,_thechildrenbegantounderstandmoreandmore.3．Victoryinthelastgamegavethemapsychologicaladvantageovertheiropponents.4．Thistypeofworkrapid
2、lybecomesroutineandattractsnobody.5．Canfuturereallybeforeseen?Ⅱ.单句改错1．Tom,inadditionhisclassmates,alsojoinsintheactivities.addition后加to2．Dressinginablueskirt,thegirllooksverypretty.Dressing→Dressed3．Agoodnightoutwillhelpyoutakeyourmindsoffexams.minds→mind4．Marytearedthelettert
3、opieceswithoutreadingit.teared→tore5．I'monadilemmaoverwhethertotellhimornot.on→inⅢ.阅读理解AThevastseasurroundingthecontinentshasalwaysinterestedthebravehumanbeing.Fromtheseamancangetfood,minerals,aswellastreasure.Forthousandsofyears,manhasbeensailingonit,buthecouldnotgetfarbeneat
4、hitssurface.Manhasbeendreamingofexploringdeepintothesea.However,thisisonlyadreamasheisnotafish.Tostaydeepintheseahemustbreatheair,sohecan'tstayunderthewater'ssurfaceforanylengthoftime.Toexploredeepwater,manisconfrontedwithevenmoredangersandproblems.Adiverwhowantstostayunderwat
5、erformorethanafewminutesmustbreatheinandoutairorhaveaspecialmixtureofgasesifnaturalairisnotavailable.Asarule,hemaywearadivingsuitandhaveairpumpedtohimfromabovethewater.Heisequippedwithatankofaironhisbackandbreathethroughahose(软管)and4amouthpieceattachedtothetank.Itisdangerousto
6、diveunderwaterbecausewaterweighs800timesasmuchasair.Tonsofwaterpushesagainstadiverwhenhedivesdeepintothesea.Hisbodyisundergreatpressure.Whenadiverisundergreatpressure,hisbloodtakesinsomeofthegaseshebreathes.Asherisestosurface,thewaterpressurebecomesless.Ifthediverrisestooquick
7、lytothewatersurface,thegasesinhisbloodwillnotdisappear,instead,theyformbubbles.Thediveristhenlikelytobesufferingfromthebends(潜水员病)．Thebendscancauseadivertodoubleupinpain.Ifthediverdoesnottakecertainmeasurestoprotecthimself,theycanevenkillhim.1．Onthewhole,thispassageisabout____
8、____.A．specialmixturesofgasesindeepseaB．theproblemsmanfacesin
