完形填空

　　When television first began to expand,very few of the people who had become famous as 1 announcers were able to be equally effective on television. Some of the difficulties they experienced when they were trying to 2 themselves to the new medi-um were technical. When 3 on radio, for example, they had become 4 to seeing on behalf of the listener. This art of seeing for others 5 that the announcer has to be very good at talking. In the case of televi-sion, however, the announcer sees 6 with the viewer. His duty, 7 , is completely different. He is there to make sure that the viewer does not 8 any point of interest, to help him focus on particular things, and to help him 9 the images on the television screen. 10 his radio colleague, he must know the value of silence and how to use it at those moments when the pictures speak for himself.

Have you dreamed of building your own machine? Do you wish you could invent something new? Here we look at a few British inventions of recent times.

Adaptable glasses

Do you wear glasses? If so, can you imagine life without them? In 1985, Joshua Silver, a professor at Oxford University, asked himself, “Can I invent a pair of glasses that could be changed by the wearer?” He designed two plastic lenses（透镜）that are filled with a special liquid. Using syringes（注射器）you change the liquid between the lenses until you can see clearly. The glasses are not beautiful but they are easy to use and cheap to make.

The wind-up radio

When you switch your TV on tonight, think about all those people without electricity. Thinking about this, Trevor Baylis came up with the idea of designing a radio that could be powered by hand. In common with Joshua Silver he wanted his invention to be cheap and easy to use. He wanted even the poorest people in developing countries, who don’t have electricity and cannot afford batteries, to use it. The radio has a generator (发电机) which is powered by turning a handle. In 1996 it won a BBC Design Award for Best Protect and Best Design.

The Dyson cleaner

In many homes around the world you can see a cleaner that looks like a spaceship. This is the Dyson vacuum (真空) cleaner which uses something called “cyclonic separation” to separate the dirt. You do not need a bag for your cleaner and it does not get blocked so it is very practical. The idea came to Sir James Dyson after he kept having problems with his vacuum cleaner. He decided he could design a better one and in 1993 he opened his own factory. The Dyson is now one of the best-selling cleaners in the UK and Dyson is believed to have earned over a billion pounds.

The Zapata fly-board

Ever dreamed of zooming through the water and leaping in the air like a dolphin? Now you can thanks to a fly-board, built by water sports enthusiast Frank Zapata. With it you can dive back in the water and out again. It’s possible to jump to incredible heights out of the water — over 30 feet. The basic fly-board model comes in at ￡4,200.

So keep dreaming and inventing. One day you might get it right.

1.What can we learn about Adaptable glasses?

A. They are very expensive.                                                  B. The inventor is a student.

C. The glasses are fragile.                                            D. They don’t look very nice.

2.Which invention won an award?

A. Adaptable glasses.                                                           B. The wind-up radio.

C. The Dyson cleaner.                                                           D. The Zapata fly-board.

3.The Dyson cleaner was invented with the purpose of _________.

A. helping people use cleaners more easily

B. making Dyson a rich businessman

C. keeping the house cleaner than before

D. taking the place of human cleaners

With the development of production and science, radio ________ a wide use in a short time．

1. A.
   found
2. B.
   finds
3. C.
   have found
4. D.
   has found

The Eiffel Tower was built in 1889, in memory of the 100th birthday of the French Revolution. The Prince of Wales, later King Edward VII of England, opened the tower. Of the 700 suggestions that were handed in, Gustave Eiffel’s was chosen.
However, at first, it was not well accepted by all and a group of people — including many well-known writers and painters at that time — were fiercely against its design.
Being about 300 meters in height, and 7,000 tons in weight, it was the world’s tallest building until 1930. It was a great project for France. 300 workers took two years to build it. It isn’t an ordinary building, since it is almost made of steel. For example, its body moves around at most 12 cm in heavy wind. Moreover, its height changes up to 15 cm according to the temperature.
It was almost destroyed in 1909, but was saved because of its antenna(天线), which is used for communication at that time. Beginning in 1910 it became part of the International Time Service. French radio and French television have also made good use of its height.
The Eiffel Tower has also seen a few strange things. In 1923, a journalist rode a bicycle down from the first level of it. And in 1954, a mountain climber climbed on top of it and tried to measure its exact height.
Anyway, although its birth was difficult, it is now well accepted all over the world. It has been considered as one of the symbols of Paris.
【小题1】The passage mainly tells us ________.