题目

如图所示的家系图中，该遗传病最可能的遗传方式是( ) A．伴X染色体显性遗传                               B．伴X染色体隐性遗传 C．常染色体显性遗传                                   D．伴Y染色体遗传 答案：D 阅读理解 　　In a great many cities, hundreds of people ride bikes to work every day．In New York, some bike riders have even formed a group called Bike for a Better City．They declare that if more people rode bikes to work, there would be fewer automobiles in the downtown part of the city and so less dirty air from car engines． 　　For several years this group has been trying to get the city government to help bike riders．For example , they want the city to draw special lanes(车道)for bikes on some of the main streets, because when bike riders must use the same lanes as cars there are accidents．Bike for a Better City feels that if there were special lanes, more people would use bikes． 　　But no bike lanes have been drawn．Not everyone thinks it is a good idea- they say it will slow traffic．Some store owners on the main streets don't like the idea- they say that if there is less traffic, they will have less business． 　　The city government has not yet decided what to do．It wants to keep everyone happy．On weekends, Central Park, the largest place of open ground in New York, is closed to cars, and the roads may be used by bike only． 　　But Bike for a Better City says that this is not enough and keeps fighting to get bike lanes down-town． (1) In New York, a group of bike riders ________． [　　] A． are keeping practicing for health B． have no cars of their own C． are complaining(埋怨)there are not enough buses D． are trying to settle the problem of air pollution (2) The bike riders suggest that ________． [　　] A． bikes should be used instead of cars． B． bike lanes should be drawn C． fewer buses or cars should be used D． the number of special lanes should be decreased (3) The advantage of the special lanes is that ________． [　　] A． they will make cars and buses run slowly B． they will make it easier for bike riders to go to parks C． they will make the city more beautiful D． they will prevent accidents (4) The government has not decided whether special lanes should be drawn ________． [　　] A． so that everyone is disappointed B． because there are different opinions C． because most people travel by train D． because Bike for a Better City is not strong enough (5) Cars are not permitted to enter Central Park on weekends ________． [　　] A． so that Bike for a Better City is pleased B． so that everyone is happy C． and bike lanes are drawn D． but Bike for a Better City is still not satisfied