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1、中考英語閱讀理解練習(xí)：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(明顯地)______thanthelightofthemoon A.hastotravelagreaterdistanceB.moveslessquickly C.travelsmuchmorequicklyD.islesspowerful(有力的) 4.Thescientificwayofsaying“Thestarsareshiningtonight”shouldbe______. A.thesta
6、rshavebeenshiningallthetimeB.thestarsseentonightwillshinefouryearslater C.thestarswereshininglongagobutseentonightD.thestarlightseentodaycouldbeseenfouryearsago 1.D事實細(xì)節(jié)題。由第1段第1句可知。 2.B推理判斷題。由第1段最后一句推出?！ ?.A推理判斷題。由第2段的第2句(太陽光到達(dá)地球需要8分鐘)和第3句(月光到達(dá)地球僅需秒)可推出(太陽光走過的距離明顯遠(yuǎn)于月光)。 4.C推理判斷題。由最后一段
7、的最后一句Theywereshiningfouryearsago,buttheirlighthasonlyjustreachedtheearth可推出。
