2025年unit 2 单元能力测试题及答案.docVIP

2025年unit2单元能力测试题及答案

本文借鉴了近年相关经典测试题创作而成，力求帮助考生深入理解测试题型，掌握答题技巧，提升应试能力。

2025年Unit2单元能力测试题及答案

一、选择题（每题2分，共20分）

1.Whatisthemainfunctionoftheliverinthehumanbody?

A.Toproduceredbloodcells

B.Tofiltertoxinsfromtheblood

C.Toregulatebloodsugarlevels

D.Tostoreenergyasfat

答案：B

解析：Theliverprimarilyfunctionstofiltertoxinsfromtheblood,detoxifyharmfulsubstances,andproducebilefordigestion.Whileitdoesplayaroleinenergystorageandotherfunctions,itsmainfunctionisdetoxification.

2.Whichofthefollowingisarenewableenergysource?

A.Coal

B.Naturalgas

C.Solarenergy

D.Nuclearenergy

答案：C

解析：Solarenergyisarenewableenergysource,asitisderivedfromthesunandisnotdepletedwhenused.Coal,naturalgas,andnuclearenergyarenon-renewable,astheyarefiniteresourcesthatwilleventuallybeexhausted.

3.Whatistheprimarypurposeofthecirculatorysystem?

A.Toprovideoxygentothemuscles

B.Toremovewasteproductsfromthebody

C.Totransportnutrientstocells

D.Alloftheabove

答案：D

解析：Thecirculatorysystemhasmultiplefunctions,includingprovidingoxygentothemuscles,removingwasteproductsfromthebody,andtransportingnutrientstocells.Therefore,alltheoptionslistedarecorrect.

4.WhichplanetisknownastheRedPlanet?

A.Mars

B.Jupiter

C.Venus

D.Saturn

答案：A

解析：MarsisknownastheRedPlanetduetoitsreddishappearance,whichiscausedbyironoxide(rust)onitssurface.

5.Whatistheprocesscalledbywhichplantsmaketheirownfood?

A.Photosynthesis

B.Respiration

C.Fermentation

D.Nitrogenfixation

答案：A

解析：Photosynthesisistheprocessbywhichplantsusesunlight,carbondioxide,andwatertoproduceglucoseandoxygen.Thisisessentialforplantgrowthandsurvival.

6.Whichofthefollowingisafunctionofthepancreas?

A.Toproduceinsulin

B.Todigestfats

C.Toproduceredbloodcells

D.Toregulatebodytemperature

答案：A

解析：Thepancreasproducesinsulin,whichhelpsregulatebloodsugarlevels.Italsoproducesdigestiveenzymes,butinsulinproductionisakeyfunction.

7.WhatisthetermforthestudyoftheEarthsatmosphere?

A.Oceanography

B.Meteorology

C.Geology

D.Biology

答案：B

解析：Meteorologyisthescientificstudyoftheatmosphereanditsphenomena,includingwe