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  3. (1)Just when Transport for London (TfL)thought the bike hire scheme provided

(1)Just when Transport for London (TfL)thought the bike hire scheme provided

游客2024-09-08  74
问题    (1)Just when Transport for London (TfL)thought the bike hire scheme provided an answer to London’s carbon emissions problem, they found a snag—bikes cannot be provided without producing emissions.
   (2)TfL uses Serco contractors to move hire bicycles around London, so there are enough in each dock to meet demand, while ensuring there is space for users to drop theirs off. Included in the fleet of vehicles are Alke electricity-powered cars, used to tow trailers of bikes.
   (3)The vehicles are narrower than the trailers of bikes, which critics say has led to accidents involving cyclists. A Freedom of Information request by the bike blog reveals that 24 road accidents have involved Serco transport vehicles since the scheme’s launch last summer, including four which also involved a cyclist.
   (4)In November, David Ellis, a 37-year-old cyclist was knocked off his bike by one of the vehicles. He said the trailers were a danger to cyclists because their width is greater than that of the tow truck. None of the recorded Serco/cyclist collisions were fatal. Compare this with 13 cyclist deaths caused by HGVs in London last year.
   (5)The vehicles used by Serco produce on average 1884g/km C02 a day in transporting the 862 bikes they’re capable of moving daily, meaning around 431kg C02 has been emitted so far.
   (6)But what level of emissions has been prevented by the scheme? Not much so far, it seems. One of TfL’s aims was to reduce overcrowding on the bus and tube networks, not to remove buses from the road, and there is no indication that the number of buses being used has dropped as a result of the scheme.
   (7)In a survey of bike scheme users it was found that 35% are tube converts, 29% used to walk and 23% have switched from bus rides. That leaves only a possible 13% who previously drove around the capital. TfL’s target of 50,000 people a day using hire bikes should widen the gap between emissions caused by Serco vehicles and emissions abated (减少)by the onset of the scheme.
   (8)There are 5,000 bikes available, which at times have struggled to cope with the 94,500 bike hire members. For the 50,000 mark to be reached by March Serco will need a more organised pattern of distribution, to limit the number of their vehicles on the road.
   (9)The scheme’s users have a role to play. If London’s cyclists want to keep their journey down to within 30 minutes so as to pay just ￡ 1 (which they do, TfL research has found)there will always be too many people trying to jam their two-wheeler into the busiest docks. But if attitudes changed and people became more flexible about paying slightly more, or walking a bit further to complete their journey, there would be less congestion around the hubs and, by default, fewer Serco vans would be needed to shift them from one to another. And that would mean fewer accidents and emissions too. [br] TfL must make sure that there is enough space in each dock for _____.
选项 A、the trailers to be efficiently towed
B、the hire bicycles to be returned
C、parking Serco contractors’ vehicles
D、parking Alke’s electricity-powered cars
答案 B
解析 本题实际上考查第2段第1句中theirs的所指，根据其前面的users和drop off可推断theirs是租赁自行车的用户可以“放下”的东西，在四个选项中，只有选项B符合这个推理。
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