中考英语阅读理解练习：light

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1、中考英语阅读理解练习：Light　　Lighttravelsataspeedwhichisaboutamilliontimesfasterthanthespeedofsound.Youcangetsomeideaofthisdifferencebywatchingthestartofarace.Ifyoustandsomedistanceawayfromthestarter,youcanseesmokefromhisgunbeforethesoundreachesyourears.　　Thisgreatspeedoflightproducessomestrangefac

2、ts.Sunlighttakesabout8minutestoreachus.Ifyoulookatthelightofthemoontonight,rememberthatthelightraysleftthemoonsecondsbeforetheyreachedyou.Theneareststarissofarawaythatthelightthatyoucanseefromittonightstartedtotraveltowardsyoufouryearsagoataspeedofnearly2millionkm.perminute.Insomecases,t

3、helightfromoneoftonight’sstarshadstartedonitsjourneytoyoubeforeyouwereborn.　　Thus,ifwewanttobehonest,wecan’tsay,“Thestarsareshiningtonight.”Wehavetosayinstead,“Thestarslookpretty.Theywereshiningfouryearsago,buttheirlighthasonlyjustreachedtheearth.”　　1.Lightspeedis______soundspeed　　A.asfa

4、stasB.amilliontimesslowerthan　　C.aboutmillionsoftimesfasterthanD.aboutamilliontimesfasterthan　　2.Ifyoustand200metresawayfromamanwhoisfiringaguntostartarace,youwillfindoutthat______.　　A.youcanhearthesoundbeforeyouseethesmokeB.thesounddoesnottravelasfastaslight　　C.thesoundwillreachyoubefor

5、ethemanfiresD.soundtravelsaboutamilliontimesfasterthanlight　　3.Sunlightobviously(明显地)______thanthelightofthemoon　　A.hastotravelagreaterdistanceB.moveslessquickly　　C.travelsmuchmorequicklyD.islesspowerful(有力的)　　4.Thescientificwayofsaying“Thestarsareshiningtonight”shouldbe______.　　A.thesta

6、rshavebeenshiningallthetimeB.thestarsseentonightwillshinefouryearslater　　C.thestarswereshininglongagobutseentonightD.thestarlightseentodaycouldbeseenfouryearsago　　1.D事实细节题。由第1段第1句可知。　　2.B推理判断题。由第1段最后一句推出。　　3.A推理判断题。由第2段的第2句(太阳光到达地球需要8分钟)和第3句(月光到达地球仅需秒)可推出(太阳光走过的距离明显远于月光)。　　4.C推理判断题。由最后一段

7、的最后一句Theywereshiningfouryearsago,buttheirlighthasonlyjustreachedtheearth可推出。