2017版高三英语一轮复习 考点规范练26 unit 3 the world of colours and light 牛津译林版选修8

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1、考点规范练26(　Unit3)Ⅰ.阅读理解Anewsystemhasbeendevelopedtomeasurethehealthoftheworld’soceans.Scientistssaythesystemwillchangethewaywethinkaboutoceansandhowtheyaffectourlives.ItiscalledtheOceanHealthIndex.Theindexisdesignedtotellifanythingiswrongwiththeoceansand,ifso,whatcanbedoneaboutit.Whetheryouli

2、veintheUnitedStatesorinthemiddleofAfrica,youshouldcareaboutwhathappenstotheoceans.Mostoftheoxygenthatyoubreathecomesfromtheocean.Theoceansaretheprimaryclimateadaptationsystem.Theyabsorbcarbon.IfyouwanttoknowwhattheEarthwouldbelikewithoutanoceanyou’vegotplentyofexamplesinoursolarsystem—allth

3、osehot,dusty,dry,coldinhospitable(荒凉的)placesarebasicallythatwaybecausetheydonothavealiquidoceantoprovideallthesebenefits,includingfood.Oneoutoffourpeopleontheplanetgettheirdailysourceofproteinfromtheocean.TheOceanHealthIndexusestwohundredseparatemeasurements.Onceayear,scientistswilluseittoa

4、nnouncewhethertheoceanssuccessfullypassedthetest.Peoplehavelookedtonatureformedicinessinceancienttimes.Andmodernscientistshavesearchedtheworld’srainforestsfornewmedicines.Buttheoceanmaybeanevenbettersource.Atleasttwenty-sixdrugsthatcomefromseaorganisms(有机体)arecurrentlybeingusedordeveloped.A

5、ndanewgenerationofchemistshopestoincreasethatnumber.Manydrugsareindevelopment,andtherewillbemanydiscoveriesofocean-basedmedicines.Asmallblood-suckingcreaturehasbeendiscoveredintheCaribbeanwatersofftheVirginIslands.Thecreaturemayhelpincreasescientists’understandingofhowdiseaseispassedamongma

6、rineanimals.Thisdiscoverywillleadtomoreinformationaboutparasites(寄生生物)andtheeffecttheycanhaveonmarineenvironments.【语篇导读】本文属于科普类文章,介绍了一种检测海洋的科学方法:theOceanHealthIndex。1.Thepurposeofthetextisto　　　. A.introduceascientificsystemtomonitortheoceanB.talkaboutthecharacteroftheoceanC.presenttheimport

7、anceoftheoceanD.introducearichsourcefornewmedicines答案:A解析:推理判断题。文章的目的是介绍一种检测海洋的体系。由第一段“Anewsystemhasbeendevelopedtomeasurethehealthoftheworld’soceans.”得出答案为A项。2.TheOceanHealthIndexcanbedescribedas　　　. A.aprotectoroftheoceanB.theocean’sdoctorC.anobservero