【正文】
n used again and again in speech than when copied in writing.But where there are no written records, such spoken stories are often very helpful.21. Which of the following ideas is not suggested in the passage? A.“Remembered history”, pared with written history,is less reliable. B.Written records of the past play the most important role in our learning of the human history. C.A written account of our daily activities helps us to be able to answer many questions. D.Where there are no written records, there is no history.22.We know very little about the central Africa 200 years ago because ___ A.there was nothing worth being written down at that time B . the people there ignored the importance of keeping a record C.the written records were perhaps destroyed by a fire D.the people there did not know how to write23.“Remembered history”refers to ___. A.history based on a person’s imagination B.stories of important happenings passed down from mouth to mouth C.songs and dances about the most important events D.both B and C24.“Remembered history”is regarded as valuable only when ____. A. it is written down B.no written account is available C.it proves to be time D.people are interested in it25. The passage suggests that we could have learned much more about our past than wedo now if the ancient people had _____A.kept a written record of every past event B. not burnt their written records in warsC.told exact stories of the most important happenings D.made more songs and dances BAccording to the American Automobile Association, since 1964 all cars sold in the United States have been equipped with seat belts. (These are also called safety belts.)Many studies of auto mobile accidents have shown that safety belts can save lives. One study showed that forty percent of those killed in auto accidents could have been saved if they had been wearing seat belts.Unfortunately belts are worn only by a small percentage of drivers and passengersabout fifteen percent in cities, and only nine percent in small towns. And safety belts cannot protect people who do not wear them.In order to find out what kinds of people do wear seat belts, a study was made in several cities of the United States. The following facts were learned about those who use their safety belts:1. They do not smoke while driving.2. They have had more education than nonusers.3. They know someone who was injured(but not killed) in an automobile accident.Advertisements based on these facts have been printed in newspapers and magazines in order to teach people the importance of using seat belts. But these advertisements have not helped much. Some people believe there should be a law requiring drivers and passengers to use safety belts. In Australia, where there is such a law, deaths in auto accidents have decreased twentyfour percent.26. The selection is mainly about ____.A. automobiles in the United StatesB. accident involving carsC. safety belts for drivers and passengersD. traffic jams27. The selection says that in Australia ____.A. a law requires drivers and passengers to use seat beltsB. about 50% of the drivers wear seat beltsC. the importance of seat belts is advertised in newspapers and magazinesD. the auto accidents have kept the same percent28. People who live in small towns _____.A. have fewer accidents than those who live in citiesB. are less likely to wear seat be