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
练习:
1 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
2 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.
3 Paragraph 3 mainly discusses
A)why the children and their parents were interviewed
B)when the children tom the handlebars through 90 degrees,
C)what causes the children to topple over
D)how serious injuries occur.
4 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 countermeasures
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