欢迎来到天天文库
浏览记录
ID:40634732
大小:48.00 KB
页数:8页
时间:2019-08-05
《句子简化题和句子插入题练习2》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Agriculture,Iron,andtheBantuPeoplesParagraph5:UnlikeintheAmericas,wheremetallurgywasaverylateandlimiteddevelopment,Africanshadironfromarelativelyearlydate,developingingeniousfurnacestoproducethehighheatneededforproductionandtocontroltheamountofairthatreachedthecarbonandironorene
2、cessaryformakingiron.MuchofAfricamovedrightintotheIronAge,takingthebasictechnologyandadaptingittolocalconditionsandresources.10.Whichofthesentencesbelowbestexpressestheessentialinformationinthehighlightedsentenceinthepassage?Incorrectchoiceschangethemeaninginimportantwaysorleave
3、outessentialinformation.○WhileAmericanironmakersdevelopedthelatestfurnaces,Africanironmakerscontinuedusingearliertechniques.○AfricansproducedironmuchearlierthanAmericans,inventingtechnologicallysophisticatedheatingsystems.○IronmakingdevelopedearlierinAfricathanintheAmericasbecau
4、seofthereadyavailabilityofcarbonandironore.○BothAfricaandtheAmericasdevelopedthecapacityformakingironearly,butAfricanmetallurgydevelopedataslowerrate.8RunningWateronMars?Paragraph4:Theseideasremaincontroversial.Proponentspointtofeaturessuchastheterraced“beaches”showninoneimage,w
5、hichcouldconceivablyhavebeenleftbehindasalakeoroceanevaporatedandtheshorelinereceded.Butdetractorsmaintainthattheterracescouldalsohavebeencreatedbygeologicalactivity,perhapsrelatedtothegeologicforcesthatdepressedtheNorthernHemispherefarbelowthelevelofthesouth,inwhichcasetheyhave
6、nothingwhatevertodowithMartianwater.Furthermore,MarsGlobalSurveyordatareleasedin2003seemtoindicatethattheMartiansurfacecontainstoofewcarbonaterocklayers—layerscontainingcompoundsofcarbonandoxygen—thatshouldhavebeenformedinabundanceinanancientocean.Theirabsencesupportsthepictureo
7、facold,dryMarsthatneverexperiencedtheextendedmildperiodrequiredtoformlakesandoceans.However,morerecentdataimplythatatleastsomepartsoftheplanetdidinfactexperiencelongperiodsinthepastduringwhichliquidwaterexistedonthesurface.9.Whichofthesentencesbelowbestexpressestheessentialinfor
8、mationinthehighlightedsentenceinthepassage?Inco
此文档下载收益归作者所有