The bicycle is one of the simplest yet most useful inventions in the world. What is most surprising is that it was not ___1__ earlier, although the great inventor Leonardo Da Vinci had drawn pictures for bicycles and also for flying machines and some other things. Those things were not produced___2___ long after he died.
A person riding a bicycle uses ___3___ energy to make the bicycle move, and there is no pollution at all when you are riding. Even so, in developed ____4___, most people don’t travel to work by bicycle. It is not because the bicycles are expensive or people feel___5____ if they ride to work. It’s because __6___ cars on the roads becomes larger. It certainly becomes ___7___ to ride a bicycle. As a result, more people put their bicycles away and go to work ___8___ their cars cars, and in this way, the situation is made more serious.___9___ the best way to make riding safer and more popular is to create paths (开设通道) only for bicycles, and to make ___10___ so difficult and expensive for drivers to take their cars into the city that they will go back to use their bicycles.
| 【小题1】 | | A．invent | B．inventing | C．invented | D．to invent |
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| 【小题2】 | | A．before | B．when | C．since | D．until |
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| 【小题3】 | | A．much | B．quite a lot of | C．very little | D．many |
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| 【小题4】 | | A．world | B．countries | C．land | D．earth |
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| 【小题5】 | | A．lucky | B．glad | C．sorry | D．tired |
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| 【小题6】 | | A．the number of | B．a number of | C．this kind of | D．all kinds of |
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| 【小题7】 | | A．safer | B．more dangerous | C．much dangerous | D．safe |
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| 【小题9】 | | A．Hardly | B．May be | C．Perhaps | D．Nearly |
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