内容正文:
教材主题语篇练·山东英语
九年级(全)Units13~14
Ⅰ.阅读理解(2023济南历城六中三模)
Cowsproducemuchmethane(甲烷),theworlds
secondworstgreenhousegas,astheybreakdown
thegrass.Theyarealargesourceofthegreenhouse
gasesthataredrivingclimatechange.Nowscien
tistshaveshownthepolutionfromcowscanbere
ducedbyaddingalitleseaweed(海藻)totheir
food.
Recently,theresearchersfromtheUniversity
ofCaliforniastudied21cowsonafarmforabout
fivemonths.Theytaughtthecowstogettheirfood
frominsideaspecialhood(罩),whichalowedthe
scientiststoknowtheamountofthemethanethe
cowsweregivingof.Theyusedasmalamountof
seaweed,whichtheymixedwiththecowsfood.
Theresultsweresurprisinglygood.Insome
cases,thecowsproduced82% lessmethane.The
improvementdependedonthekindoffoodthecows
weregiven.Eventheworstpolutingcowsproduced
33% lessmethane.Overthefivemonths,the
scientistsdidntseeanysignsthatthecowsstomachs
weregetingusedtotheseaweedandstartingto
producemoremethaneagain.Whatsmore,the
cowsthatwerefedseaweedgainedjustasmuch
weightastheothercows.
Buttherearestilsomebigproblemswiththe
ideaoffeedingcowsseaweed.Foronething,
theresnotenoughseaweedtofeedalofthecowsin
theworld.Sofarmerswouldhavetofigureouta
waytogrowlotsofseaweed.Abiggerproblemis
thatformostoftheirlives,cowsliveinthefields,
wheretheyeatgrass.Thatmeanstheresnochance
tofeedthemseaweedeveryday.
Stil,itsverygoodnewsthatsomethingassim
pleasfeedingcowsseaweedcanhelpreducesomeof
thepolutioncausingtheclimatecrisis(危机).
1.Whydidtheresearcherscaryoutthestudy?
B
A.Toimprovethecowswelfare.
B.Totesttheefectsoftheseaweedonreducing
thepolutionbycows.
C.Tomeasuretheamountofmethaneproduced
bycows.
D.Todiscoverhealthiergrasstoreducethe
polutionfromcows.
2.Whatsthethirdparagraphmainlyabout? A
A.Theresultsofthestudy.
B.Theprocessoftheresearch.
C.Thecontentoftheexperiment.
D.Theinformationofthesubjects.
3.Whatisthebiggestchalengeintheresearchers
opinion? D
A.Seaweedispretyrareintheworld.
B.Itshardtomixseaweedwithgrass.
C.Cowsfedwithseaweedgainedweighteasily.
D.Cowscanhardlyha