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2025年托福考试阅读真题模拟试卷:科学知识篇

考试时间:______分钟总分:______分姓名:______

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