You can see some overhead bridges in my hometown. There is one near the No. 1 People's Hospital. Another is in front of the Bus Station. As we all know, it is not safe to cross a busy road. These bridges can help people cross the roads safely. Overhead bridges have the same use as street crossings.

Many people think it great trouble to go through overhead bridges. The old and the young think it's difficult for them to climb up and down the steps of the overhead bridges. But why does the government build so many overhead bridges? That's because old people and young children walk slowly. And when they cross a busy road using a street crossing, the traffic will be held up or maybe stopped, or even a traffic accident may happen. With the help of the overhead bridges, people and the traffic can move at the same time.

A lot of money has been spent building these overhead bridges. People, old or young should always use them. This can help stop traffic accidents from happening.

(D)

Now, many people like moving to cities. 1 However, in Hyderabad, India and in San Paulo, Brazil, how do they solve these problems?

Hyderabad, India

In order to protect the environment and improve people's lives, they are planting more and more flowers, grass and trees in Hyderabad. People are even building greener buildings. They use less and less water and electricity for power. 2 For example, trees make the air fresher and cleaner. In the past, streets were gray and dirty. Today they plant many trees, grass and flowers, making the city cleaner and more colorful. 3 For example, people love to do various kinds of leisure activities in public.

San Paulo, Brazil

A lot of persons work in the center of San Paulo, but they don't live there. They like living outside the city, because housing is cheaper there. 4 In order to solve traffic problems, they are trying their best to improve traffic conditions. They're building better and more subways. 5 Doing this will reduce (减少) traffic pollution(污染) in the city.

根据短文内容,从所给的选项中,选出能填入空白处的最佳选项。选项中有两项是多余的。

A. The green areas also give people place to relax and exercise.

B. It's easy for them to find good jobs in cities.

C. These cities are facing some problems, such as traffic jam and pollution.

D. Every day, these persons go into the city and traffic is heavy.

E. It's cheaper for people to live in the countryside.

F. Adding green to a city has a number of advantages.

G. They have chance to meet their friends.

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