【正文】 utobiographies are helping to get more British people reading books. About 100 million autobiographies are sold in Britain every year. More stars depend on them for extra ine and as more of these books appear in the shops, more people are sure to keep buying them. 44． An autobiography is . A． always a bestseller in the UK B． someone’s life story normally written by themselves C． a magazine with stories and photos of a star D． a program that tells us the lives of the stars nowadays 45． Traditionally, someone would write his autobiography when . A． they became famous B． they wanted to make money C. they were older and had achieved a lot D. they wanted to share their childhood with the readers 46． The writer probably would agree that autobiographies are good in that . A． they tell us a lot about the everyday life of famous people B． famous people earn a lot of money by selling them C． they encourage people to read D． we can learn a lot from them 47. The underlined phrase in the para 3 has the same meaning with ___________ A. other than B. as well as C. instead of D. aside from (D) “We don’t have rush hours any more”, said Mr. Charles Mac Lean, who runs the nation’s busiest road. “We have rush periods, and they keep getting longer and longer.” Mac Lean was describing Chicago’s 235 miles of expressway. But the same might be said about almost any of the expressways that have bee an important part of American city life—and about the heavy traffic that often blocks them. In Chicago, a puterized system has been developed that controls traffic on the city’s seven expressways. Now one mana controllercan follow the movement of Chicago’s traffic by looking at a set of lights. The system uses electronic sensors that are built into each expressway, half a mile apart. Several times a second, the puter receives information from each sensor and translates it into green, yellow, or red lights on a map in the control room. A green light means the traffic is moving fortyfive miles an hour, yellow means thirty to fortyfive miles an hour and red means heavy traffic—cars standing still or moving less than thirty miles an hour. “See that red light near Austin Avenue?” the controller asked a visitor. “That’s a repair truck fixing the road, and the traffic has to go around it”. At the Roosevelt Road entrance to the expressway, the light kept changing from green to red and back to green again. “A lot of trucks get on the expressway there,” the controller explained. “They can’t speed up as fast as cars.” The sensors show immediately where an accident or a stopped car is blocking traffic, and a truck is sent by radio to clear the road. The system has lowered the number of accidents by 18 percent. There are now deaths on Chicago’s expressways for each one hundred million miles traveled, while in other parts of the country there are . Traffic experts say that the Chicago system is the “ing thing”. Systems like Chicago’s are already in use on some expressways in Los Angeles and Houston. “Chicago has taken the lead,” says New York City’s traffic director。 and he adds, “We are far behind…” 48. How does the controller follow Chicago’s traffic? A. By controlling the traffic lights. B. By operating a puter in the control room. C. By sending a truck to clear the roads. D. By looking at a set of lights on the map in the control room. 49. The underlined word “it” in paragraph 3 refers to _________. A. a truck which needs repairing B. a red light C. Austin Avenue D. a truck doing repairs on the road 50. Which of the statements is true about the puterized system in Chicago? A. It changes rush hours into rush periods. B. It saves a lot of labor and meanwhile prevents some deaths. C. It is the first system of this kind in America. D. I