阅读理解:
Man always wanted to fly. For hundreds of years they watched birds flying and wished that they could fly too. Birds fly very easily. Then they spread their wings and float on the air. The air keeps them up. Men know how to make kites hundreds of years ago. Kites could stay in the air for many hours. “If birds and kites can stay up in the air, perhaps we can,” they thought.
At first they made wings like birds. Then they jumped off high buildings and tried to fly. Many men did this but they all failed. After many failures they stopped trying to fly with wings. Then two brothers tried another way. They tried balloons. “Hot air is lighter than cold air,” they said, “That is why hot air goes upwards. If we fill a balloon with hot air, it will go upwards.”
After many experiments, they made two men go up in balloon full of hot air. A great crowd of people watched. The balloon rose to a height of 900 meters. The wind blew it along for nine kilometers. Then it came gently back to earth. For the first time man traveled through the air.
1. Hundreds of years ago man realized that birds fly easily because ______.
[ ]
A. there is air B. they are small
C. they have wings D. they are light
2. When some men tried to fly with wings, ______ succeeded.
[ ]
A. only a few of them B. only the two brothers
C. many of them D. none of them
3. Which of the following did men first think of when they wanted to fly?
[ ]
A. birds B. hot air C. balloons D. high buildings
4. Balloons seemed not a good way to travel because ______.
[ ]
A. they went too high B. they went too low
C. they were too big D. they were not easy to operate
5. Which of the following is not true?
[ ]
A. The first balloon were filled with hot air.
B. The first successful flight of man failed to be controlled by himself perfectly.
C. The balloon carrying people for the first time landed safely.
D. The first flight of man doesn’t seem to have much to do with their final success.
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