2025年托福考试阅读真题模拟试卷：科学知识篇
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一、阅读理解
要求：阅读以下文章，然后回答问题。
TheImpactofClimateChangeonOceanEcosystems
Oceanecosystemsarehighlysensitivetochangesinclimate.Theincreasinglevelsofcarbondioxideintheatmospherehaveledtoariseinseasurfacetemperatures,whichcanhaveprofoundeffectsonmarinelife.Thefollowingarticlediscussessomeofthekeyimpactsofclimatechangeonoceanecosystems.
1.Whatisthemaincauseofrisingseasurfacetemperatures?
A.Increasedsalinitylevels
B.Meltingpolaricecaps
C.Deforestation
D.Overfishing
2.Whichofthefollowingisadirectconsequenceofrisingseasurfacetemperatures?
A.Increasedoceanacidity
B.Decreasedoxygenlevels
C.Increasedsealevel
D.Alloftheabove
3.Howdoesoceanacidificationaffectmarineorganisms?
A.Itpromotesthegrowthofcoralreefs
B.Itreducestheavailabilityofcalciumcarbonateforshell-buildingorganisms
C.Itincreasesthediversityofmarinespecies
D.Itleadstothedevelopmentofnewmarinehabitats
4.Whatistheprimarycauseofcoralbleaching?
A.Overfishing
B.Pollution
C.Climatechange
D.Humanactivities
5.Howdoesclimatechangeaffectfishpopulations?
A.Itleadstoanincreaseinfishpopulations
B.Itcausesfishpopulationstomigratetocoolerwaters
C.Itpromotesthegrowthoffishpopulations
D.Itreducesfishpopulations
6.Whatistheroleofoceancurrentsindistributingnutrientsthroughouttheocean?
A.Theytransportnutrientsfromoneregiontoanother
B.Theypreventthemixingofnutrientsintheocean
C.Theycreatebarrierstothemovementofmarineorganisms
D.Theycontributetotheformationofmarinedeadzones
7.Howdoesclimatechangeaffectmarinebiodiversity?
A.Itincreasesmarinebiodiversity
B.Itdecreasesmarinebiodiversity
C.Ithasnoeffectonmarinebiodiversity
D.Itpromotesthedevel