1.Have you          (do) anything to keep the water clean?

2.Project Hope has built schools and        (library).

3.Our city        (change) a lot since 2001.

4.The girl left the classroom without         (say) anything?

5.All of us want to know how         (play) computer games.

One day after school Mr. Tillman found Philo Farnsworth making drawings on the blackboard in the school-room.

“What are you doing?” Mr. Tillman asked with interest. “ What are these drawings?”

“I want to invent things,” Philo answered, “and these are drawings of my first inventions.”

Mr. Tillman smiled to himself, “What is your invention?”

“I have an idea for a way of sending pictures through the air,” The boy answered. “Please just let me tell you about it. You are the only person who can understand what I have done.”

In 1922, even radio was new. The United States had fewer than 30 radio stations. But in 1922, a boy of 16 showed his teacher drawings for television!

In 1926, Philo worked as an office boy in Salt Lake City. Many important businessmen came into the office where he worked. One of these, George Everson , was from San Francisco. Like Mr. Tillman, Everson soon became interested in Philo. The shy, hard-working boy was like other office boys who Everson had known.

One evening Everson asked Philo to have dinner with him. After the meal, Philo began talking about his idea for Television. At first, Everson was not much interested in the invention. He listened only to be polite.

Many years later, Everson wrote a book telling about that evening with Philo. “As Farnsworth talked, he seemed to change,” Everson wrote, “His eyes lighted up , and he was no longer shy.” Talking freely about his invention, Philo Farnsworth was no longer an office boy--he was a scientist.

At the end of the evening, Everson was more interested than ever in Philo. And he was also interested in Philo’s idea for television.

After talking with Philo , Everson returned to San Francisco. There he brought together a number of important businessmen . Philo told them about his invention. The men became so interested in the young inventor that they gave $25,000 to help him work on his idea. Philo was only 20 years old, but here was his chance.

1.What kind of drawings was Philo making on the blackboard one day?

       A. Drawings of his school-room.        B. Drawings of his invention.

       C. Drawings of his interest.            D. Drawings for Mr. Tillman.

2.Philo’s new idea was to _______________.

A.tell his teacher all about his invention 

B.show Mr. Tillman about his idea by drawings

C.send pictures through air  

D.make other people see things by pictures

3.George Everson first became interested in Philo because he ________________.

       A. did his work well as an office boy     

B. was quite different from other office boys

C. was shy and did not work hard        

D. was also interested in Philo’s drawings

4.When talking about his invention, Philo ____________.

       A. listened to Mr. Everson politely    

B. became more interested in the businessman

       C. seemed to change his idea        

D. looked like a scientist

5.Which of the following is true?

A.Philo made his television only four years later.

B.Mr. Everson helped Philo to invent the television with his own money.

C.Mr. Everson himself was an important businessman.

D.The businessmen in Salt Lake City gave Philo the money for his invention. 

For many years scientists have said that the earth is getting warmer. Now they have found something new-hot cities! In the southern US, they have found that cities become very hot in summer. For example, the city of Atlanta in Georgia has roof(屋顶) temperature of up to 50^oC while it is 27℃ in the streets! At night, the outside of buildings stays so hot that the heat of the city causes storms over the city!

China also has the same kind of problems. Every year more farmland is used for factories or offices. More housing is needed, too. As people become richer, they buy more cars. New roads are needed and new car parks are built in the city centers. This all makes cities hotter.

It isn’t easy to change the situation. City planners say that we should plant more trees in the middle of cities. Every new street should have trees on both sides, they say. Trees make the temperature lower, so we should have more trees in our parks and squares. We should also paint our roofs white. If we do this, they do not become so hot. Every roof in a hot and sunny country should have solar(太阳的) roof panels. The electricity from these can be used to run the air conditioners (空调)in the buildings.

People continue to cut down forests around the cities. This makes the problem worse. Cities are growing faster and faster. By the year 2025, four fifths(五分之四) of the population will be living in cities. If we go on like this, there will not be enough farmland to feed everyone in the world

1.The scientists have found       .

2.The way to make the city cooler is to       .

3.What will probably happen in the future according to the fourth paragraph(段落)?

4.What is the best title(题目)for the passage?