The city of Venice in Italy is very famous. It is built on more than 120 islands just off the coast. The islands are small and close together. The waterways between them are used as streets. They are called canals. In this watery world people use boats to travel from place to place. Gondolas small boats that are moved with one oar (桨) ，were once the only boats used in the canals. But today motor boats make getting around faster;there are still lots of gondolas though. Many visitors go to Venice all the year round. And they like to ride in the old-style boats. If you aren’t going far in this city it's easier to go on foot. There are hundreds of narrow footpaths. About 100 low bridges connect the footpaths and the islands. But these bridges cause problems for the boaters. When the sea tide (潮) is high the canal water rises. People in the boats must duck to fit under bridges. 1. After reading the first paragraph we can come to the conclusion that ____ . A. all the buildings in Venice are held up (抬高) on sea water B. there's no land in the city of Venice C. the streets in Venice are all lined with boats D. few people can be seen walking in the streets of Venice 2. Which of the following statements is NOT mentioned in the passage? ____ A. Many people like to ride in the old-style boats. B. Neither cars nor buses are in Venice. C. Citizens in Venice don't walk much. D. Gondolas rides are common in Venice. 3. Which of the following statements leads us to the conclusion that travelling around Venice by gondolas can be slow? ____ A. Gondolas small boats that are moved with one oar were once the only boats used in the canals. B. But today motor boats make getting around faster. C. But these bridges cause problems for the boaters. D. People in the boats must duck to fit under bridges. 4. The word “ duck ” in the last sentence means “ ____ ” A. bend one's head in order not to be hit B. go quickly under water for a short time C. swim as a duck does D. dive suddenly like a duck