There is not enough oil in the world now. As time goes by ,it becomes less and less ,so what are we going to do when it runs out? Perhaps we will go back to use horses ,carriages and bicycles .
In the Second World War ,some people didn＇t use gas made from petroleum （石油）in their cars .They made gas from wood and plants instead . The cars didn＇t go fast ,but they ran ,so this was better than nothing. However, in the future, we can＇t cut down all our trees to make gas; we need our trees for other things, too.
Besides different types of gas, we can also use electricity(电)to run our cars but first we must make the electricity ！Some countries have coal and they make electricity with that, but we might not always have coal, either. Other countries have big ,strong rivers and they can use the power of water to turn turbines(涡轮机) and make electricity more easily and cheaply.
We are also able to get power from the ocean tides. We put turbines into the mouth of the river .Then the tide comes in ,the water turns the turbines and then it goes out ,it turns them again.
Which of these ways will be used to run our cars in the future?
【小题1】When might people have to go back to using horses and carriages?

根据汉语提示写出单词 ，完成句子
【小题1】Can you tell me the           （首都）of China ?
【小题2】I am a hotel            (经理) .
【小题3】There           (有) a computer on the desk .
【小题4】We _      ___(庆祝) Spring Festival in January or February.
【小题5】It’s           （重要的）to eat well and do sports every day .
【小题6】My mother            (买)  vegetables in this shop .
【小题7】They        （开始）lessons at half past one in the afternoon .
【小题8】How many           （导游） are there in the city？
【小题9】I           (通常) go to the zoo with my son the weekends .
【小题10】My father starts a computer              （公司）。

Zhao Tao, a student from No.2 Middle School, has just come back from Shanghai. This morning, he told us something about his pleasant trip .When he talked about the Shanghai World Expo, he was so excited and so proud that he kept telling about it for several hours. The Shanghai World Expo held by China has been on for more than one month .It started on May 1st, and will end on October 31st, 2010. Its main idea is “Better City, Better Life.” About 242 countries and organizations are attending this expo. Many new products can be seen here, such as we can see the snow in the South Korea Corporate Pavilion(展馆) every day during this hot summer though it seldom snows in Shanghai. And we can see, hear, touch and smell the 4-D films at the Oil Pavilion. How wonderful all these new products are!
China Pavilion is in the center of the expo garden. It is very beautiful. It represents the development of China from ancient time to now. It’s a pride of our China!
Thousands of people from all over the world are coming to the expo every day. And many volunteers are working for them. All the tourists are very pleased and they say that the Shanghai World Expo is the greatest one in the world so far.
However, Zhao said, “The expo garden is now so crowded. If you want to visit it, you’d better go there during the summer vacation.”
【小题1】The main idea of the Shanghai World Expo is “______”

Your computer has been playing music for years, one CD at a time.  Now hundreds of songs can be stored in your PC if they' re in the MP3 format (格式).