sensor n．传感器；敏感元件
airbag n．(安全)气囊
severity n．严重(性)
deceleration n．减速
occupant n．占有人，占用者
1. A)try B) tried C) trying D) having tried
2. A)automatically B) accidentally
C) tremendously D) usually
3. A)changed B) located C) developed D) copied
4. A)by B) up C) about D) to
5. A)forms B) is consisted of
C) composed of D) includes
6. A)read B) reading C) reads D) being read
7. A)on B) in C) of D) at
8. A) car maker B) policeman C) doctor D) operator
9. A) via B) near C) by D) besides
10.A) assists B) causes C) makes D) helps
11. A) number of B) deal of C) amount of D) volume of
12. A) writer B) reporter C) expert D) leader
13. A)already B) long ago C) long before D) shortly
14. A)although B) nevertheless C) however D) if
15. A)city B) year C) person D) country