阅读微技能导练英语人教版七年级上册 Unit4MainIdeaB.docx
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阅读微技能导练英语人教版七年级上册Unit4MainIdeaB
1.TheMoonhasone-sixththegravityofEarth.EverythingweighssixtimeslessontheMoon.Onewomanweighs120poundsonEarth.OntheMoon,thesamewomanwouldweighonly20pounds.ShecouldjumphigherontheMoonthanshecouldonEarth.Abluewhaleweighs150tons.IfabluewhalecouldgototheMoon,itwouldweighjust25tons.
1.Thestorymainlytells
A.howtogettotheMoon
B.aboutweightdifferencesonEarthandtheMoon
C.whatawomanweighsontheMoon
D.howmuchabluewhaleweighs
2.Acrazyquiltisaworkofart.Peoplesewtogetherodd-sizedpiecesofcloth.Theydon'tuseanyspecialpatterns.Theyusemanydifferentshapesandfabrics.Afterabackingisattached,thequiltisfinished.Itlookslikealarge,beautifulpuzzle.Maybeacrazyquiltshouldhaveanicername.
2.Thestorymainlytells
A.thatacrazyquiltisaworkofart
B.howodd-sizedpiecesofclothareused
C.howabackingisattached
D.howacrazyquiltlookslikeapuzzle
3.Theworld'sgreatesttraveleristheArctictern.ThisbirdmigratesfromoneendofEarthtotheother.ItfliesfromtheArctictotheAntarcticandbackeachyear.Theroundtripisabout23,600miles.
3.Thestorymainlytells
A.howanArcticternlooks
B.aboutanimalmovement
C.aboutthemigrationofthe
Arctictern
D.abouttheArctictern'snest
4.Forestfiresburnthousandsoftreeseachyear.Theyareunsafetothepeopleandhomesintheirpath.However,firesinforestsarenotalwaysharmful.Fireisoneofnature'swaysofdestroyingproblemweeds.ThennativeplantscanreturnWhenthicktreesandbrusharegone,animalsfinditeasiertogetfood.
4.Thestorymainlytells
A.howforestfiresstart
B.howforestfirescanbehelpful
C.howfiresdestroyproblemweeds
D.howanimalsfindfood
5.Sneakerswereinventedmorethan100yearsago.Theywerecalledcroquetsandals.Theycostfivetimesasmuchasothershoes,soonlyrichpeopleworethem.Thenacompanybegantomaketennisoxfords.Mostpeoplecouldaffordthese.Theywereverypopular.Soonspecialsneakersweremadeforothersports,suchasrunning.Nowwehaveallsortsofsneakers.
5.Thestorymainlytells
A.howsneakershavechangedthroughtheyears
B.whichsneakersarerightforyoursport
C.whatthedifferenceisbetweenshoesandfootwear
D.whocouldbuycroquetsandals
1.Theoceanis7milesdeepinsomeplaces,butscubadiverscangodownlessthanamile.Belowthatthewaterpressureistoostrong.Scientistshavebuiltspecialsubmarinesthatcangodeeper.Someofthemaremadetoholdoneperson.Otherscanbecontrolledfromshipsonthesurface.Withthesesubspeoplegonearly4milesdown.Thedeepestpartsoftheoceanarestillamystery.
1.Thestorymainlytells
A.howstrongthepressureisintheocean
B.whichsubmarinescanbecontrolledfromships.
C.howwaterpressureaffectsexploringintheocean
D.howpeopleseethebottomoftheocean
2.Thousandsofyearsago,someonewastravelingacrossthedesert.Forfoodhecarriedsheep'smilkinagoatskinbag.Thehotdesertsunturnedthemilkthickandsour.Hewashungry,soheatethestrangestuff.Tohissurprisehelikedit!
That'showyogurtwasdiscovered.
2.Thestorymainlytells
A.whichfoodstotakeinthedesert
B.howyogurttastes
C.howyogurtwasfirstmade
D.howtostayaliveinthedesert
3.Manygreenleaves,whicharefoodfactoriesfortrees,changecolorinthefall.Theirgreencoloringmakesfoodoutofsunlight,air,andwater.Whenthedaysgrowshorterinthefall,thesefactoriesslowdownandthenfinallystop.Thegreenslowlyfadesaway.Wheredotheyellow,orange,andbrowncomefrom?
Theywereintheleavesallthetime,butthegreenwastoobrightfortheothercolorstoshow.
3.Thestorymainlytells
A.whyleaveschangecolorinthefall
B.howleavesmakefoodfromsunlight,air,andwater
C.whatthepartsofatreeare
D.whatfoodfactoriesmake
4.Whenbaseballwasnew,playershadtothrowtheballandhittherunnertomakeanout.Theballhadtobebigandsoftsotherunnerswouldn'tbehurtLater,playersusedthetagasawaytomakeanout.Thismadethegamemoreexciting,anditcausedsomeotherbigchanges.Theballcouldbesmallerandharder.Thesmallerballcouldbethrownfaster,andbatterscouldhititfarther.Thusthemoderngameofbaseballwasborn.
4.Thestorymainlytells
A.howbaseballchanged
B.howpeopleusedtomakeanoutinbaseball
C.howlargeoldbaseballswere
D.howfaramodernbaseballcanbehit
5.Ifyouaregoingonapicnic,don'twearanythingthatsmellsgood.Someinsectsarecrazyaboutperfume.Beeswillsmellyouandcomeswarming.Peoplehavealsofoundthatbeeslikebright,flowerymaterial.Itseemsthatsomeinsectsjustcan'ttellthedifferencebetweentherealthingandacopy!
5.Thestorymainlytells
A.whentowearperfume
B.howtodresswellontrips
C.howtoavoidbeesonpicnics
D.howsomethingscanattractinsects
1.IttakespracticeandskilltothrowaFrisbee.Besureyourindexfingerislinedupontheoutsiderim.TilttheedgeoftheFrisbeethatisoppositeyourthumbdownward.Thestrongerthewind,themoretheFrisbeeshouldbetilted.Youneedastrongwrist.It'sthesnapofyourwristthatsendsyourFrisbeespinning.
1.Thestorymainlytells
A.howtothrowaFrisbee
B.howimportantstrongwristsare
C.whattodoinastrongwind
D.howtoaimatyourtarget
2.Whydorabbitsalwaysseemasiftheyhaveitchynoses?
Expertssaythenosewigglinghelpskeeptheirnosetissuedamp.Thisimprovestheirsenseofsmell.Rabbitsadjusttheirairintakeinthisway,too.Itkeepsthemcoolonhotdays.Sometimesnosewigglingsimplymeansrabbitsareexcited.
2.Thestorymainlytells
A.whyrabbitswiggletheirnoses
B.howarabbitimprovesitssenseofsmell
C.whyrabbitsadjusttheirairintake
D.whatrabbitsdowhentheyareexcited
3.Maybeyouhaveseenflamingosinazoo.Thesebrightlycoloredbirdswithlongneckslooktoopinktobereal.Wildflamingosgettheirbright-pinkfeathersfromtheplantsandfishtheyeat.However,inzoostheydon'teatthesamethingstheydointhewild.Theycouldturnwhite.Tokeepthisfromhappening,thezookeepersgivethesebirdsaspecialpill.
3.Thestorymainlytells
A.howflamingosstaypink
B.whatflamingoseat
C.whatkindsofbirdsthereare
D.howbirdsinzoosgetpink
4.Ifyousneeze,you'llalmostalwayshearsomeonesay"blessyou."Somehistoriansthinkthatpeoplestartedsaying"blessyou"morethan1,000yearsagoinEurope.Atthattimetheplaguewasspreadingeverywhere.Oneofthefirstsignsofthisterriblesicknesswassneezing.Peoplethoughttheblessingmighthelpkeepthemfromgettingsick.
4.Thestorymainlytells
A.howadiseasespreadacrossEurope
B.whathappenstothebodywhenpeoplesneeze
C.howthesaying"blessyou"gotstarted.
D.whysneezingisasignofgettingsick
5.Scientistsarestudyingaseaturtle.ShelivesinatankinBoston.Thescientiststhinkshecanteachthemhowsheuseshearingtosenseherworld.Sheisbeingtrainedtorespondtosignals.
5.Thestorymainlytells
A.aboutturtlesenses
B.wheretheturtlelives
C.howturtlesmakesignals
D.whatscientistshopetolearnfromtheturtle
1.Televisionwasinventedinthe1920s.Fewpeoplehadtelevisionsuntilthe1950s.Fortyyearslater,98percentofthehouseholdsintheUnitedStateshadatelevision.Watchingtelevisionisapopularactivity.Manyhomeshavetwoormoretelevisions.Americanswatchmorethan1,500hoursoftelevisionperpersoneachyear.
1.Thestorymainlytells
A.thehistoryoftelevisioncommercials
B.whentelevisionwasinvented
C.whattelevision-watchinghabitsAmericanshave
D.howtelevisionsactuallywork
2.Whentheirenemieschasethem,ostrichesliedownonthesand.Thegiantbirdsstretchtheirnecksoutflatontheground.Whentheyliethere,theloosefeatherson
theirbodieslooklikebushes.Ostrichesdon'tneedtohideoften.Theirstronglegsaregoodforbothrunningandfighting.
2.Thestorymainlytells
A.howostrichessticktheirheads
inthesand
B.howsmartostrichesare
C.howostrichesavoidtheirenemies
D.howstrongostrichlegsare
3.Balletdancersoftenspinaroundandaround.Whydon'ttheybecomedizzy?
Adancer'sbodyturnssmoothly.Thedancerholdshisorherheadstillandthenjerksitaroundquickly.Thiswaytheheadisstillmostofthetime.Thedancerdoesnotbecomedizzy.
3.Thestorymainlytells
A.whyadancerspins
B.howtobecomeaballetdancer
C.whereaballetdancerpractices
D.whyadancerdoesnotbecomedizzywhendoingturns
4.Anoctopusgetsitsnamefromitseightarms.Therehavebeennewdiscoveriesabouttheseseacreatures.Expertshavefoundthatanoctopushasamemory.Itusesthatmemorytosolveproblems.Anoctopusindangerusesabuilt-indefense.Itsquirtsastreamofinktohelpithide.
4.Thestorymainlytells
A.thatanoctopushaseightarms
B.howanoctopususesitsmemory
C.someinterestingfactsaboutoctopuses
D.howanoctopuscansquirtastreamofink
5.Itisimportanttoputareturnaddressonmail.Mailwithawrongmailingaddressgoestothedead-letteroffice.Therepostalworkersopenittosearchforclues.Iftheydon'tfindany,themailisthrownaway.Thepostofficecansellitemsofvalue.Itkeepsthemoney.
5.Thestorymainlytells
A.howtowritealetter
B.whatcanhappentomailwithnoreturnaddress
C.howmailgetsthrownaway
D.howthepost
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