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, S1 T" y5 {+ e1. People can travel on foot. But it takes a long time to get form place to place.
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2 {- ]( Y. e* Z$ Q* {' U2. Machines help people travel more quickly and carry heavy loads
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. v2 r( ~ T7 L, _3. A bicycle is machine. The faster you pedal, the faster you move.& ]( b `' \( t4 k/ C) J+ M
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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?- N1 m" U* h0 g9 B3 ?' K/ K
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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.2 L: S' a* p8 L9 T# @& w
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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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. M( ?% k4 [& y& s+ i/ p7. Cars, buses and coaches, vans and trucks all use roads. They give off fumes that pollute the air we breathe.
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8. Trains run on specially built railway tracks. Some train below ground.
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! ]( t- Q9 _- a9. Sometimes we need to travel across water. Ferry boats have space for trucks, coaches, cars, and people. ; s2 F, t( g3 i' e+ t* P! P9 Z
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10. Airplanes are machines that fly. A jumbo jet can carry more than 300 passengers a helicopter is also a flying machine. 2 Z3 O# \; S% y5 Q
/ \6 s. {1 _; `3 B$ E5 f4 P11. 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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S# w T& B( A! e8 } r* i, e- | I12. Some people find it difficult to walk. What machine can help them?
+ j, D* [* D8 ]: U# CAnswer: wheelchairs. |
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发表于 2005-7-18 14:43
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