大学英语四级阅读理解练习 五

　　Questions 6 to 10 are based on the following passage:
　　For centuries man dreamed of achieving vertical flight. In 400 A.D. Chinese children played with a fan like toy that spun upwards and fell back to earth as rotation ceased. Leonardo da Vinci conceived（构思）the first mechanical apparatus（装置）, called a "Helix", which could carry a man straight up, but this was only a design and was never tested.
　　The ancient dream was finally realized in 1940 when a Russian immigrant, an aeronautical engineer, piloted a strange-looking craft of steel tubing with a rotating fan on top. It rose awkwardly and vertically into the air from a standing start, hovered a few feet above the ground, went sideways and backwards, and then settled back to earth. That vehicle was called a helipcopter.
　　Imaginations were fired. Men dreamed of going to work in their own personal helipcopter. Every man would have one in his backyard. People anticipated that vertical flight transports would carry millions of passengers as do the airliners of today. Such fantastic expectations were not fulfilled.
　　The helicopter has now become an extremely versatile（多样化）machine. It excels in military missions, carrying troops, guns and strategic instruments where other aircraft cannot go. Corporations use them as offices in the air, many big cities use them in police work, construction and logging companies employ them in various advantageous ways，engineers use them for site selection and surveying, and oil companies use them as the best way to make offshore and remote work stations accessible to crews and supplies: Any urgent mission to a hard-to -get -to place is a likely task for a helicopter. Among their other kinds of uses, they deliver people across town, fly to and from airports, assist in rescue work, and aid in the search for missing or wanted persons.
　　6.What is a helicopter?
　　 A) An aircraft that can go faster than the ordinary airplane.
　　 B) An aircraft that can fit into the smallest possible place
　　 C) An aircraft that can fly vertically
　　 D) An aircraft that is used only for commercial service
　　7.What is said about the development of the helicopter?
　　 A) Helicopters have only been worked on by man since 1940.
　　 B) An Englishman was the first to achieve flight in a helicopter.
　　 C) Helicopters were considered more dangerous than the early airplanes.
　　 D）Some people thought they would become widely used by the average individual.
　　8.________ helicopters are found to be necessary.
　　 A) For overseas passenger transportation
　　 B) For extremely high altitude flight
　　 C) For high-speed transportation
　　 D) For urgent missions to inaccessible places
　　9.How has the use helicopters developed?
　　 A) Each year they have become larger to accommodate greater loads.
　　 B) They are taking the place of high-flying jets.
　　 C) They are often used for rescue work.
　　 D) They are now used exclusively for commercial projects.
　　10. Helicopters work on _______.
　　 A) a combination of propellers（螺旋桨）in front and on top
　　 B) a rotating propeller topside
　　 C) one propeller in the center of the aircraft and others at each end
　　 D) a propeller underneath for lifting power
　　Questions 11 to 15 are based on the following passage:
　　Most of us trade money for entertainment. Movies, concerts and shows are enjoyable but expensive. If you think that you can't have a good time without spending a lot of money, read on. A little resourcefulness（丰富资源）and a few minutes of newspaper-scanning should give you some pleasant surprises.
　　People may be the most interesting show in a large city. Stroll through busy streets and see what everybody else is doing. You will probably see people from all over the world; you will certainly see people of every age, size, and shape, and you'll get a free fashion show, too. Window-shopping is also a safe sport -if the stores are closed.
　　Check the listing in your neighborhood paper. Local colleges or schools often welcome the public to hear an interesting speaker or a good debate. The film or concert series at the local public library probably won't cost you a penny. Be sure to check commercial advertisements too. A flea market（跳蚤市场）can provide hours of pleasant browsing（浏览）. Perhaps you can find a free cooking or crafts demonstration in a department store.
　　Plan ahead for some activities. It is always more pleasant not to have people in front of you in a museum or at a zoo. You may save money, too, since these places often set aside one or two free admission days at slow times during the week. Pretend that you are a tourist from time to time, and get to know your city all over again including the indispensable sights that people travel miles to see. If you feel like taking an interesting walk, find a free walking tour, or plan one yourself， you will see your city in a new perspective once you know more about its history or its architectural treasures. With imagination and a spirit of adventure you can quite easily find good entertainment at no cost at all.
　　11.You should be a tourist ________.
　　 A) and enjoy without spending much money
　　 B) and attend meetings to debate the issues people are interested in
　　 C) if the film shown at the local public library is often free of charge
　　 D) if you want to know more about the city you live in
　　12.The word "shape" in paragraph two refers to people being _______.
　　 A) old and young
　　 B) fat and thin
　　 C) tall and short
　　 D) beautiful and ugly
　　13.If you are wandering through the busy streets, which of the following will most attract you?
　　 A) Various buildings.
　　 B) Car driving.
　　 C) Window-shopping.
　　 D) Free walking.
　　14."--- one or two free admission days at slow times --- " means _______.
　　 A) business is good
　　 B) business is bad
　　 C) strolling is slow
　　 D) people are slow in learning
　　15.What is the best title for this passage?
　　 A) Amusement at Little Cost
　　 B) Movies, Concerts and Shows
　　 C) The Cheapest Window-shopping
　　 D) The most Enjoyable Street Musicians