? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ?
{{B}}Pushbike Peril{{/B}} ? ?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 came 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 ? ? ? ? ? ? ? ?
? ? redesign v. 重新设计 ? ?bioengineer n. 生物工程师 ?
? ? ? ? ? ? ? reconstruct vt. 重建；重构 ?
?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
In paragraph 2, the author mentions a study of serious abdominal injuries ______.
? ? ? ? ? ? ?
? ? ? ? ? ? ? ? ? ?
{{B}}Pushbike Peril{{/B}} ? ?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 came 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 ? ? ? ? ? ? ? ?
? ? redesign v. 重新设计 ? ?bioengineer n. 生物工程师 ?
? ? ? ? ? ? ? reconstruct vt. 重建；重构 ?
?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
In paragraph 2, the author mentions a study of serious abdominal injuries ______.
A.to discuss how abdominal injuries in children occur B.to show that more than a third injuries were caused by bicycle accidents C.to point out what the countermeasures can be D.to tell us why Kristy Arbogast began the project
单选集
