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9 F, u( _5 b& s1. People can travel on foot. But it takes a long time to get form place to place.6 S, Z8 Z% l$ r# X& J7 k4 t
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2. Machines help people travel more quickly and carry heavy loads
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1 N( J7 m% k7 T. ?; ~+ k. t% Q3. A bicycle is machine. The faster you pedal, the faster you move.% S2 N$ P7 D* [# S
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4. You do not need to pedal a motorcycle. It was an engine that makes wheel go around. Why it this person wearing a helmet?
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5. Cars have four wheels, and the passengers sit inside. Car can travel very fast. But when road are busy, a car trip can seem slow and boring.
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6. When lot of people want to go to the same place, they travel together on bus or coach. They can even travel by streetcar.
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7. Cars, buses and coaches, vans and trucks all use roads. They give off fumes that pollute the air we breathe.
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1 W1 z4 z8 }# L" U( f. Y# u; ^) C8. Trains run on specially built railway tracks. Some train below ground.% }: |, ~+ [# X. ~$ o
9 R/ U6 X6 d8 E* i6 t1 C9. Sometimes we need to travel across water. Ferry boats have space for trucks, coaches, cars, and people.
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+ R/ D I3 z; g% W& B10. Airplanes are machines that fly. A jumbo jet can carry more than 300 passengers a helicopter is also a flying machine. . M+ R' y3 W2 I8 Q
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11. The rocket and the space shuttle are also machines. The space shuttle carries astronauts into space and brings them safely back to earth.
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12. Some people find it difficult to walk. What machine can help them?
! ]8 w/ n5 E b" aAnswer: wheelchairs. |
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狗仔卡
发表于 2005-7-18 14:43
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