2024_2025年新教材高中英语UNIT5AdelicateworldSectionⅡUsinglanguage课后练习含解析外研版选择性必修第二册.doc

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Usinglanguage

Ⅰ.阅读理解

A

Astheclimatewarms,birdsareshrinking(缩小)andtheirwingspansaregrowing,accordingtoanewstudy.Researchersanalyzed70,716birdsfrom52kindsofNorthAmericanmigratory(迁徙的)birdspeciescollectedover40years.Theauthorssaythestudyisthelargestofitskindandthatthefindingsareimportanttounderstandinghowanimalswilladapttoclimatechange.

“Wefoundalmostallofthespeciesweregettingsmaller.”saidleadauthorBrianWeeks,anassistantprofessorattheUniversityofMichigan.“Thespecieswereprettydiverse,butrespondinginasimilarway，”hesaid.“Theconsistency(一样性)wasshocking.”Hesaidstudiesofanimalresponsestoclimatechangeoftenfocusonshiftsingeographicalrangeortimingoflifeevents,likemigrationandbirth.

“Thatsonemajorimplication，”hesaid,“Itshardtounderstandhowbirdswilladaptwithouttakingallthreeofthesethingsintoconsideration.”

Thefindingsshowedthatfrom1978to2016,thelengthofthebirdslowerlegboneshortenedby2.4%.Overthesametime,thewingslengthenedby1.3%.

Theevidencesuggestswarmingtemperaturescausedthedecreaseinbodysize,whichinturncausedtheincreaseinwinglength.

“Migrationisanincrediblytaxingthingtheydo，”MrWeekssaid,explainingthatthesmallerbodysizemeanslessenergyavailableforthebirdstocompletetheirlongjourneys.Hesaysthebirdsmostlikelytosurvivemigrationweretheoneswithlongerwingspansandsmallerbodies.

Thescientistsarentexactlysurewhywarmertemperaturescausebirdstoshrink.Onetheoryisthatsmalleranimalsarebetteratcoolingoff,losingbodyheatmorequickly.

语篇解读：本文是一篇说明文。探讨表明，随着气候变暖，鸟类数量在削减，鸟的体型在缩小，翅膀在增长，缘由未知。

1．WhatmadeBrianWeeksfeelastonished?

A．Ittook40yearstocollect70,716birdsfromNorthAmerica.

B．Manybirdsareshrinkingwhenrespondingtotheclimatechange.

C．Allmigratorybirdspecieswerecollectedtodotheimportantresearch.

D．