阅读下列短文，从每题所给的四个选项A、B、C、D中，选出最佳选项。

　　The tower of Big Ben,London's most famous building,has always leaned（倾斜）slightly,but construction work on a new line for the London Underground seemed likely to give the tower a real lean．Engineers have had to prop up（支撑）its base to prevent it from damaging the rest of the Houses of Parliament．

　　To control the tower's movement,engineers pumped grout（水泥浆）into tile soil under the tower．The tower now leans an extra few centimetres,but the lean can only be seen by the most sharp— eyed observer．

　　Between 1995 and 1997,to lengthen the Jubilee line of the Underground,builders dug a 40．— metre— deep hole just 31 metres north of the clock tower．And the new tube(underground)tunnels' were even nearer to the tower．John Burland,who recently helped stop the increasing lean in the Leaning Tower of Pisa and was an adviser to the Jubilee line project,believed the work would affect the tower．In his opinion,no further lean should go beyond a safety limit of 27.5 millimetres over existing lean of 220．millimetres．

　　To keep the lean within this limit,Burland told the British Association about the new method of pumping grout immediately under the base of the tower．More than 300 tons of grout were pumped in during construction．The tower's additional lean went between 10．and 25 millimetres,but never passed 27.5 millime_Ires．

　　After the construction work was completed in late 1997,a review of movements in nearby walls showed that the building was in better shape than had been thought before and the safety limit was raised to 35 millimetres before any action needs to be taken．

　　Since 1997,the tower has continued to lean,Burland told Modern Construction．The latest measurements,taken this year,suggest that the tower's lean had just reached 35 milllmetres．But following regular re— examinations of the tower,experts are sure that the tower has stabilised（稳定）．A spokesman for London Underg-round says:“We understand the tower has stabilised and returned to its normal movement cycle．”

　　From Modern Construction,16 September,2000．

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　　Some people do not like anything to be out of order．They are 　　1　　 late for work．They 　　2　　 the books to the library on time．They remember people’s birthdays, and they pay the bill the moment they 　　3　　．Mr．Dodds is 　　4　　 a man．

　　Mr．Dodds works in a bank, and lives 　　5　　 his own．The only family is in the next town：his sister lives there with her 　　6　　, and her son 　　7　　 Mark．Mr．Dodds doesn’t see his sister, or 　　8　　 family, from one year to the next．He sends them Christmas cards, and he had not forgotten one of 　　9　　 seventeen birthdays．

　　Last week Mr．Dodds had quite an incident．He drove home from his office at the 　　10　　 time, 　　11　　 neither too slowly nor too 　　12　　．He parked his car where he 　　13　　 parked it, and then he went 　　14　　 to make his evening meal．Straight away, there was a 　　15　　 at the door．Mr．Dodds 　　16　　 the door, to find a policeman 　　17　　 on the doorsteps．

　　“What have I done 　　18　　?” Mr．Dodds asked himself．“Have I 　　19　　 on the wrong side of the road? Has there been some trouble on the bank? Have I forgotten to pay an important bill?”

　　“Hello!　　20　　,” said the policeman, “My name is Mark．”

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