【单选题】

Driving cars, trucks and motorcycles is an important part of our lives. We do it every day to get to work, to school or to friends' houses. 

Driving can be very convenient, but can also cause many problems. Waiting in line at a red light, a driver may get impatient and decide just to drive right through it. If another car is coming from the other direction, there might be a terrible accident. Cutting another car off can make its driver angry, so that driver cuts off someone else. Pretty soon everybody is angry, and impatient. 
Traffic accidents declare millions of lives every year worldwide. In Taiwan alone, over seven people are killed in accidents every day. The annual death rate (年死亡率) from traffic accidents in Taiwan is twice that of Japan. 
To allow traffic to move smoothly and safely, everybody must follow the rules. Before you drive, learn all the traffic laws. That way of driving is safe, convenient and even fun! 
51.The word " convenient " in the passage means ________ . 
A. handy, easy to do  B. that can be changed 
C. fond of drinking and merry-making D. carriages or other trucks 
52. If you cut another car off, its driver may be _______. 
A. impatient  B. terrible  C. angry  D. both A and B 
53. The sentence " Traffic accidents declare millions of lives "means "_______". 
A. Traffic accidents make some people become millionaires 
B. Many people die from traffic accidents 
C. Millions of people say they themselves have had traffic accidents 
D. Millions of people remain healthy after traffic accidents 
54.According to the passage, driving can be safe if _______. 
A. you are patient  B. you obey all the traffic rules 
C. you don't cut another car offD. you wait in line at a red light 
55. Which of the following may be the best title for this passage? _______. 
A. Traffic Safety B. A Careful C. How To Drive A Car D. A Traffic Accident