[简答]  二、阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。London'sRiverThameshastwenty-sevenbridges.ButTowerBridge,thefirstbridgeovertheThamesasyoutraveltoLondonfromthesea,isthemostfamousofthemall.WhatmakesTower Bridgesoexciting?Whydovisitorscomefromallovertheworldtoseeit?ThethingthatissurprisingaboutTowerBridgeisthatitisopeninthemiddle.Itdoesthistoletthe bigshipsthroughtothePoolofLondon.Ifyouareluckyenoughtoseethebridgewithitstwoopeningarmshighintheair,youwillneverforgetit.OnitsnorthsidestandstheTowerofLondonitself.Althoughtheylookthesameage,theToweris almostathousandyearsold,andTowerBridgeisonlyaboutonehundred,itwasbuiltinthe1890s. By1850,everyoneagreedthatabridgeacrosstheThamesneartheTowerwasmostnecessary.But thedesignersarguedaboutthenewbridgeforanother thirtyyears.Thistooksolongbecausetheyhad twobigproblems.l.TowerBridgeis.A.aboutonethousandyearsoldB.theoldestandthemostfamousbridgeinLondonC.thefirstoneyoucanseewhenyougofromtheseatoLondon2.TheTowerofLondonis.A.acrossfromtheThamesB.onthenorthofTowerBridgeC.inthemiddleofTowerBridge3.WhichofthefollowingisNOTtrueaccordingtothepassage?A.Youcanseethebridgewithitstwoopeningarmshighintheairatanytime.B.By1850everybodythoughtitmostnecessarytohaveabridgebuiltacrosstheThamesneartheTower.C.Ittookthedesignersthirtyyearstoargueaboutthebridgebeforeitwasbuilt.4.Whyisthebridgeopeninthemiddle?A.Tomakeitspecial.B.Toattract(吸引)morepeoplefromtheworldtoseeit.C.ToletthebigshipthroughtothePoolofLondon.5.HowlongwastheTowerBridgebuilt?A.Athousandyears.B.Ahundredyears.C.Fivethousandyears.