Plants are very important living things. Life could not go on if there were no plants. This is because plants can make food from air,water and sunlight. Animals and man cannot make food from air,water and sunlight. Animals get their food by eating plants and other animals.Therefore animals and man need plants in order to live.This is why we find that there are so many plants around us.

If you look carefully at the plants around you,you will find that there are two kinds of plants:flowering plants and non-flowering plants.

Flowering plants can make seeds(种子). The seeds are protected by the fruits. Some fruits have one seed, some have two, three or four, and some have many seeds. But a few fruits have no seeds at all. An example of a fruit without seeds is the banana fruit. Most non-flowering plants do not grow from seeds. They grow from spores(胚芽). Spores are very small. Some spores are so small and light that they can float in the air. We may say that spores are quite the same as seeds. When these spores are all on wet and shady places, they usually grow into new plants.

1. The main idea of the first paragraph is that ______.

A. plants are important for life     B. plants cannot grow without air

C. there are many plants in the world   D. we can not live without water

2. Plants can make food from______.

A. flower, water and air          B. water, sunlight and air

C. air, water and soil          D. air, sun and light

3. What can we infer from the passage ?

A. Of all living things animals are most important

B.Spores are seeds

C. All fruits of flowering plants have seeds

D.Without plants, man will die out

4. This passage may be taken from______.

A. a medicine book          B. a novel

C. a science magazine           D. an experiment report

 

The modem Olympic Games were founded with the intention of improving health and education, promoting world peace and encouraging fair and equal competition. But over the years, the Olympic saying, “Faster, higher, stronger”, has pushed scientists as well as athletes to do everything possible to reach new levels.

Doctors, engineers and coaches all use everything science can offer to achieve that little bit extra in competition. The reason modern technology has become part of sport is very simple: Winning is just as important as it was 2,500 years ago at the Olympics of ancient Greece.

Development in technology has often been reflected in the methods of training and performance used at the Olympics through history. This technology falls into two main groups: improving an athlete’s performance in competition, and allowing results to be measured more accurately.

One of the creations that have drawn the most attention is the new high-tech swimsuit from Speedo, which was used by most US swimmers in Athens. Until Sydney 2000, it was thought that the smaller the swimsuit, the faster the swimmer would travel.

“However, the fact that at the Sydney Olympics, 28 of the 33 gold medallists were wearing the body covering Fastskin suit proved the theory was out of date,” said Andy Thomas, vice-president of Speedo.

The company’s full body suit is supposed to make swimmers 3 to 4 percent faster, particularly when turning or diving into the water. It is believed that the suit creates less water resistance as it moves, behaving more like a shark skin than a human skin.

The introduction of high-tech equipment means that athletes in all sports, from the 100-metre sprint(短跑) to the pole vault(撑杆跳高), can now train more effectively and nourish (给…以营养) their bodies better.

Meanwhile, scientific development also means performances can be measured and studied far more accurately. Not only are winning times more accurately recorded, but cheating athletes are also easier to catch out. According to International Olympic Committee (IOC) requirements, two independent measuring systems should be used at all venues(比赛地点). Athens 2004 organizers used only the very latest equipment to measure distance and speed.

 

The (1)_____

The (3)______

 

Science can (4)_______ athletes’ performance.

Science can get results (8)______ more accurately.

Winning is the most (2)_____ thing.

High—tech swimsuit from Speedo can make swimmers 3 to 4 percent faster and was (5)______ by 28 of the 33 gold medal (6)______ at the Sydney Olympics.

Athletes in all sports can train in a more effective (7)_______

Winning times can

be (9)_______ more accurately.

Cheating

athletes can be (10)_______ caught out.

 

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