Pushbike PerilLow speed bicycle crashes can badly injure—or even kill—children if they fal - 试题答案网问答

第1题

Pushbike PerilLow speed bicycle crashes can badly injure — or even kill — children if they

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 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 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 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 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.

According 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.

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第2题

Pushbike PerilLow speed bicycle crashes can badly injure or even kill children if they fal

Pushbike Peril

Low speed bicycle crashes can badly injure or even kill children if they fall onto the ends of the handlebars(车把) 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(腹部的) 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(对策)." she says.

By interviewing the children and their parents, Arbogast and her team were able to reconstruct(重建；重构) 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 (冲力) 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(握柄) fitted with a spring and damping(制动的；减速的，缓冲的) system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The group hopes to commercialize(使商品化) 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.

According 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.

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第3题

Pushbike PerilLow speed bicycle crashes can badly injure--or even kill--children if they f

Pushbike Peril

Low speed bicycle crashes can badly injure--or even kill--children if they fall onto the ends of the handlebars(自行车把)．______ (1)

Kristy Arbogagt, a bioengineer (生物工程师) at the Children’ s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal(腹部的)injuries in children in the past 30 years showed that more than a third were caused by bicycle accidents．_____(2)

By interviewing the children and their parents, Kristy and her team were able to reconstruct many of the accidents and identified a common mechanism responsible for serious injuries．_____ (3) To maintain their balance they turn the handlebars through 90 degrees,but their momentum(动力)forces them into the end of the handlebars．______ (4)

The solution the group came up with is a handgrip(握柄) fitted with a spring and damping(缓冲的)system．The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact．_____ (5) “But our task has been one of education because up until now, bicycle manufacturers were unaware of the problem,” says Kristy．

The team has also approached the U．S．Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design．A decision is expected later this year．

A．The task, according to Kristy, was to identify how the injuries occurred and to come up with some countermeasures(对策)．

B．The group hopes to commercialize(使商业化)the device, which should add only a few dollars to the cost of a bike．

C．So a team of engineers is redesigning(重新设计)the humble handlebar in a bid to make it safer．

D．When the task is over, the engineers believe, there are probably no such injuries

or tragedies among bicycle-drivers．

E．The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen．

F They, discovered that most injuries occur when children hit an obstacle at a slow speed, causing them to t,opple over．

第 46 题请选择（1）处的最佳答案．

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第4题

Pushbike Peril Low speed bicycle crashes can badly injure or even kill children if they fa

Pushbike Peril

Low speed bicycle crashes can badly injure or even kill children if they fall onto the ends of the handlebars (车把) 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(腹部的) 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(对策). " she says.

By interviewing the children and their parents, Arbogast and her team were able to reconstruct(重建; 重构) 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 (冲力) 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(握柄) fitted with a spring and damping(制动的; 减速的，缓冲的) system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact, The group hopes to commercialize(使商品化) 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.

According 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.

点击查看答案

第5题

Pushbike Danger Low speed bicycle crashes can badly injure -- or even kill -- children if

Pushbike Danger

Low speed bicycle crashes can badly injure -- or even kill -- children if they fall onto the ends of the handlebars (车把). So a team of engineers is redesigning it to make it safer.

Kristy Arbogast, a bioengineer at the Children's Hospital of Philadelphia in Pennsylvania, began the project with her colleagues. The cases they reviewed about serious abdominal (腹部的) 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 cause for serious injuries. They discovered that most cases occur when children hit an obstacle at slow speed, causing them to topple (摇摆) over. To maintain their balance the children turn the handlebars through 90 degrees -- but their momentum (冲力) forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, pushing it into their abdomen (腹部).

The solution the group came up with is a handgrip (握柄) fitted with a spring and damping (减速) system. The spring absorbs up to 50 per cent of the forces transmitted (传递) 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 engineers are trying to improve the handlebars because

A．they are not beautiful.

B．they may kill children.

C．they are likely to crash.

D．they affect the speed of the bike.

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第6题

Pushbike Danger Low speed bicycle crashes can badly injure－or even kill－children if t

Pushbike Danger

Low speed bicycle crashes can badly injure－or even kill－children if they fall onto the ends of the handlebars (车把). So a team of engineers is redesigning it to make it safer.

Kristy Arbogast, a bioengineer at the Children's Hospital of Philadelphia in Pennsylvania, began the project with her colleagues. The cases they reviewed about serious abdominal (腹部的) 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 cause for serious injuries. They discovered that most cases occur when children hit an obstacle at slow speed, causing them to topple (摇摆) over. To maintain their balance the children turn the handlebars through 90 degrees - but their momentum (冲力) forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, pushing it into their abdomen (腹部).

The solution the group came up with is a handgrip (握柄) fitted with a spring and damping (减速) system. The spring absorbs up to 50 per cent of the forces transmitted (传递) 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.

第 31 题 The engineers are trying to improve the handlebars because

A．they are not beautiful.

B．they may kill children.

C．they are likely to crash.

D．they affect the speed of the bike.

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第7题

Pushbike Peril Low speed bicycle crashes can badly injure — or even kill — children if the

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

According 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

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第8题

特异度（specificity，Sp)

特异度(specificity，Sp)

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第9题

执行 POP AX 指令正确的 CPU 操作过程（)A i（SP＋1 SP,（（SP ALB i （SP＋1 SP,（（SP AH ii（SP＋1 S

执行 POP AX 指令正确的 CPU 操作过程()

A i(SP+1 SP,((SP AL

B i (SP+1 SP,((SP AH ii(SP+1 SP,((SP AH ii (SP+1 SP,((SP AL

C i((SP AL,(SP+1 SP

D i((SP AH, (SP+1 SP ii((SP AH,(SP+1 SP ii((SP AL, (SP+1 SP

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第10题

执行PUSH AX指令的正确步骤是()

A.1.SP←SP-1,(SP)←AH

B.1.(SP)←AH,SP←SP-1 2.SP←SP-1,(SP)←AL 2.(SP)←AL,SP←SP-1

C.1.SP←SP+1,(SP)←AH

D.1.(SP)←AH,SP←SP+1 2.SP←SP+1,(SP)←AL 2.(SP)←AL,SP←SP+1

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