[单选题]第三部分：概括段落大意和补全句子(第16～25题，每题1分，共10分)阅读下面短文。请完成短文后的2项测试任务：(1)从第16～20题后所给的6个选项中为第①～⑤段每段选择1个正确的小标题；(2)从第21～25题后所给的6个选项中选择5个正确选项。分别完成每个句子。
A材料题回答16-25题Transportation Infrastructure __①__ As has been demonstrated repeatedly, a transportation infrastructure based around individuals in automobiles contributes to global warming, pollution, health problems energy insecurity. Conversely,the idea behind a green transportation infrastructure is one that provides opportunities for people to get around their communities using their own power--such as walking or biking--or by other more environmentally sensitive means, like trains or buses. Sometimes, the best definition of a concept can be found by describing what it is not. All one has to do to get across the idea is to highlight the experience virtually all of us have shared at some point in our life(for millions of Americans it can be literally an everyday experience) : sitting in our motionless cars on a jam-packed highway as the vehicles spew emissions pollution into the air. Even in cases when it's difficult or impossible to remove the car from the picture entirely, there are ways to green our transportation infrastructure improve our health quality of life. Therefore, we have to find out some ways to improve what's already in place. __②__ A lot of city dwellers hold that they prefer to drive cars to work.Sure, there are plenty of reasons keeping them in the cars. Convenience is obviously one, but having to wait at a bus stop then sit or ston a crowded bus while cars go by is definitely another big trouble. But cities around the world are doing their best to employ the environmental benefits of bus ridership by making them more attractire to ride．0ne major way is by creating laries dedicated to buses so that they can zoom past cars trucks on roadways． __③__ Fun is j ust one of the many benefits to cities towns that commit to making biking easy safe．“Cleaner，healthier，quieter safer neighborhoods”，are the results of making bikeways 1anes a priority，says Zehner，who argues that even though American cities are more spread out than those in Europe，they are still great candidates for bikes．If Americans can embrace the concept it will make us more like the rest of the world；indeed。Zehner says the bike is the predominant mode of transport globally，with around 2 billion people using them． __④__ When it was originally built in l889，the Poughkeepsie-HighlRailroad Bridge in Poughkeepsie，N．Y．，was all about commerce transportation，allowing people goods to flow easily over the Hudson River．For years，the bridge sat unused after a fire nearly destroyed it in 1974 untiI a group called Walkway over the Hudson hegan its efforts to transform the bridge into a place for the public to enjoy．The group was finally successful in its efforts when the Walk way over the Hudson State Park opened in 2009--making it the iongest pedestrian bridge in the world，which has since attracted more than l million visitors．Pedestrian bridges provide opportunities for alternative，environmentally friendly transportation modes such as biking walking． __⑤__ Giving people the opportunity encouragement to get out walk sometimes takes a little creativity，especially in hyper-urban areas like New York City．In the city’s old Meatpacking District，a group of committed citizens have transformed what was once a piece of what would now be called green irfrastructure--an elevated railway line transformed it into a nearly 1．5-mile walkway park on the west side of Manhattan called the High Line．What was a transportation route for meat other agricultural goods heading into factories warehouses from 1934 to 1980 is now a popular park with areas for public art urban gardens．16. Paragraph①______ 查看材料A.A little creativity is required to encourage people to walk．
BPeople can use more electric vehicles instead of cars．
CThe green transportation encourages people to use human power or other environmentally friendly means．
DBiking will do great good to the environment．
EBus lanes should be made to attract more bus riders．
FPedestrian bridges function as alternatives to biking walking．
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答案解释：
[解析]第一段第二句是该段的主题句。后面内容都是围绕这一主题展开的解释、说明。选项c中的关键词green transportation与第一段内容对应。答案为C
