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1、姓名:_ 班级:_ 学号:_-密-封 -线- 标签:标题考试时间:120分钟 考试总分:100分题号一二三四五总分分数遵守考场纪律,维护知识尊严,杜绝违纪行为,确保考试结果公正。1、pushbike perillow 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

2、.kristy arbogast, a bioengineer at the childrens 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

3、the injuries occurred and come up with some countermeasures,” she says.by interviewing the children and their parents, arbogast and her team were able tog reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. they discovered that most occur when childr

4、en hit an obstacle at a slow speed, causing them to topple over5. 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 a

5、bdomen6.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 bik

6、e. “but our task has been one of education because up until now, bicycle manufacturers 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.a

7、ccording to the passage, some engineers are trying to improve the handlebars because ( )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.2、pushbike perillow speed bicycle crashes can badly injure or even kill children if they fa

8、ll 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 childrens hospital of philadelphia in pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in chil

9、dren 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 tog reconstruct many of the a

10、ccidents and identified a common mechanism responsible for serious injuries. they discovered that most occur when children hit an obstacle at a slow speed, causing them to topple over5. to maintain their balance they turn the handlebars through 90 degrees but their momentum forces them into the end

11、of the handlebars. the bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen6.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 handle

12、bars 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 manufacturers were unaware of the problem,” says arbogast.the team has also approached the us consumer prod

13、uct safety commission to try to persuade manufacturers to adopt the new design. a decision is expected later this year.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 cau

14、sed by bicycle accidents.c.to point out what the countermeasures can be.d.to tell us why kristy arbogast began the project.3、pushbike perillow 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 h

15、andlebar in a bid to make it safer.kristy arbogast, a bioengineer at the childrens 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 acciden

16、ts. “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 tog reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. they disc

17、overed that most occur when children hit an obstacle at a slow speed, causing them to topple over5. 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 t

18、he ground, ramming it into their abdomen6.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

19、a few dollars to the cost of a bike. “but our task has been one of education because up until now, bicycle manufacturers 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 deci

20、sion is expected later this year.paragraph 3 mainly discusses( )a.why the children and their parents were interviewed.b.when the children turn the handlebars through 90 degrees.c.what causes the children to topple over.d.how serious injuries occur.4、pushbike perillow speed bicycle crashes can badly

21、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 childrens hospital of philadelphia in pennsylvania, began the project with her colleagues after a stud

22、y 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

23、were able tog reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. they discovered that most occur when children hit an obstacle at a slow speed, causing them to topple over5. to maintain their balance they turn the handlebars through 90 degrees but t

24、heir 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 abdomen6.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 th

25、e 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 manufacturers were unaware of the problem,” says arbogast.the team h

26、as 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.the passage implies that( )a.it is not easy to persuade manufacturers to adopt the new design.b.the team of engineers has not found any counte

27、rmeasures.c.children like to ride bicycles at a very low speed.d.a lot of children were killed in bicycle accidents in the past 30 years.5、pushbike perillow 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 redesignin

28、g the humble handlebar in a bid to make it safer.kristy arbogast, a bioengineer at the childrens 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 b

29、icycle 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 tog reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. they discovered that most occur when children hit an obstacle at a slow speed, causing them to topple over5. to maintain their balance they turn the handlebars through 90 degrees but their momentum forces

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