ket真题6及答案电子.docVIP

ket真题6及答案电子

一、单项选择题，(总共10题，每题2分)。

1.Whichofthefollowingisarenewableenergysource?

A)Coal

B)Naturalgas

C)Solarenergy

D)Nuclearenergy

Answer:C

2.Whatistheprimaryfunctionofthemitochondriainacell?

A)Proteinsynthesis

B)DNAreplication

C)Energyproduction

D)Celldivision

Answer:C

3.InwhichlayeroftheEarthistheasthenospherelocated?

A)Crust

B)Mantle

C)Core

D)Lithosphere

Answer:B

4.Whatisthechemicalsymbolforgold?

A)Ag

B)Au

C)Go

D)Gd

Answer:B

5.Whichofthefollowingisagreenhousegas?

A)Oxygen

B)Nitrogen

C)Carbondioxide

D)Helium

Answer:C

6.Whatistheprocesscalledwhenwaterchangesfromaliquidtoagas?

A)Freezing

B)Evaporation

C)Condensation

D)Sublimation

Answer:B

7.WhichplanetisknownastheRedPlanet?

A)Venus

B)Mars

C)Jupiter

D)Saturn

Answer:B

8.Whatisthestudyoflivingorganismscalled?

A)Chemistry

B)Physics

C)Biology

D)Astronomy

Answer:C

9.Whichofthefollowingisafunctionoftheliver?

A)Producingredbloodcells

B)Filteringwastefromtheblood

C)Regulatingbloodpressure

D)Absorbingnutrients

Answer:B

10.Whatisthespeedoflightinavacuum?

A)300,000km/s

B)150,000km/s

C)500,000km/s

D)100,000km/s

Answer:A

二、多项选择题，(总共10题，每题2分)。

1.Whichofthefollowingarerenewableenergysources?

A)Solarenergy

B)Windenergy

C)Geothermalenergy

D)Coal

Answer:A,B,C

2.WhatarethemaincomponentsoftheEarthsatmosphere?

A)Nitrogen

B)Oxygen

C)Argon

D)Carbondioxide

Answer:A,B,C,D

3.Whichofthefollowingarefunctionsofthekidneys?

A)Filteringwastefromtheblood

B)Regulatingbloodpressure

C)Producingurine

D)Producingredbloodcells

Answer:A,B,C

4.WhatarethelayersoftheEarthsatmospherefromclosesttofarthestfromtheEarth?

A)