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  3. Pushbike Peril Low speed bicycle crashes can badly injure — or even kill — children if they fall onto the ends of the handlebar

Pushbike Peril Low speed bicycle crashes can badly injure — or even kill — children if they fall onto the ends of the handlebar

admin2009-06-15  57
问题                    Pushbike Peril
Low speed bicycle crashes can badly injure — or even kill — children if they fall onto the ends of the handlebars so a team of engineers is redesigning the humble handlebar in a bid to make it safer.
Kristy Arbogast, a bioengineer at the Children’s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that more than a third were caused by bicycle accidents. "the task was to identify how the injuries occurred and come up with some countermeasures." she says.
By interviewing the children and their parents, Arbogast and her team were able to reconstruct many of the accidents and identified a common mechanism responsible for serious injures. They discovered that most occur when children hit an obstacle at a slow speed, causing them to topple over. To maintain their balance they turn the handlebars through 90 degrees — but their momentum forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen.
The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The group hopes to commercialize the device, which should add only a few dollars to the cost of a bike. "But our task has been one of education because up until now, bicycle manufacturer were unaware of the problem," says Arbogast.
The team has also approached the US Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design a decision is expected later this year.
handlebar n (常用复数)(自行车等的)车把
abdominal adj腹部的
bioengineer  n.生物工程师
countermeasure  n.对策
abdomen  n.膜，腹部
momentum  n.冲力
handgrip  n.握柄
damping adj.制动的，减速的，缓冲的
commercialize vt.使商品化
选项 A、they are not noble enough
B、they may kill children
C、they are likely to crash
D、they make the bike move at a low speed
答案B
解析 借助常识判断A不是答案：利用题干山的核心词engineers和handlebars作为答案线索，这样找到答案相关句：Low speed bicycle crashes can badly injure—or even kill—children if they fall onto the ends of the handle bars．So a team of engineers iS redesigning handlebar in a bid to make it safer．划线句说“车把手不安今会严重地伤害孩子，甚至杀死孩子，所以工程师们参加了竞标，对车把进行重新设计，以使其更加安全”。所以B是答案。
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