题目内容：

In China , people’s living conditions in the cities have changed a lot in the ways of transportation in the past fifty years .

A survey shows that the number of people riding a bike or walking is always decreasing . In 1974 , more than 50% of people traveled to work on their own bikes , while by 2014 , less than 20% of travelers preferred cycling or walking to work . Now the number becomes much smaller .

At the same time , there was a large increase in the use of cars . In 1974 , very few people had a car . By 1994 , about a quarter of travelers drove to work . This increased again , until 2014 , about one third of travelers drove to work .

What has caused these changes ? The main reason is that people’s living conditions have changed greatly . With the increasing number of people going by bus or car , fewer and fewer people would like to be cyclists or walkers .

As people enjoyed the convenience（便利）and speed of buses and cars , they are less likely to have patience and interest in cycling and walking . In the future , with the development of science and technology , more changes will happen in people’s everyday lives .

根据短文内容，选择最佳答案：

1.How many people went to work by bike in 1974 ?

A. More than a quarter .

B. More than a half .

C. More than one fifth .

2.The number of people driving to work in 2014 is      larger than that in 1994 .

A. about 20%      B. about 75%        C. about 8%

3.What’s the meaning of the underlined word in Chinese ?

A.降低   B.增加   C.变化

4.What caused the changes in the ways of transportation in the past fifty years ?

A. People’s living conditions have become better .

B. Buses and cars are more convenient ,so people have less patience and interest in cycling and walking.

C. Both A and B

5.What’s the best title for this passage ?

A. People Prefer Cycling or Walking to Work .

B. A Large Increase in the Use of Cars

C. Changes in Ways of Transportation