_________（49）A.The task according to Kristy was t

_________（49）

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 topple over.