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     In 1947 a pilot of a small aeroplane saw rune strange objects in the sky over

Washington, the USA. He said that they looked like saucers. Newspapers printed

his story under the headline" Flying Saucers".

     Since then, all over the world, people have reported similar strange flying objects.

No one knows what they are or where they come from. Some people say that they

do not exist, but many others say that they have seen them. Usually people on the

ground have seen them but not always. Airline pilots also have reported seeing them

and so have astronauts-the men who fly in spaceships.

     Perhaps some people saw them only in their imagination or illusion(幻觉). Perhaps

some people made a mistake. But airline pilots and astronauts do not usually make

mistakes of this kind. Captain Ed Mitchell, the sixth man to walk on the moon, said in

1974 that he believed that some" flying sancers (飞碟) " were real. Many other people

now believe that these strange flying objects are visiting the earth from other worlds in

space. "They have come to greet us," they say.

     The American government tried to find out more about these objects. It listened to

a great many people who said they had seen them. But the Govemment Committee

could not decide on what the objects were.It called them UFO, which is short for

"unidentified flying object".

     Some even say they have seen people in the flying Saucers!In 1964,a driver of a

police car in new Mexico saw a UFO landing a mile away. When he reached it, there

were two small figures standing near it. They looked like little men. When he reported

on his radio, they got inside the object and flew away.

     In 1973 two men were out fishing in Mississippi River. They say they saw a UFO

shaped like an egg. There were three creatures like men but their skins were silver in

colour. They had no eyes, and their mouths were just slits(裂缝) . Their noses and ears

were pointed(尖的).They made the fishermen get inside the UFO for a while. Then the

creatures photographed them and took them to the place where they had been fishing.

     There are many other similar stories. Some are probably untrue but some may be

true. No one knows.

1. According to the passage, the name " Flying Saucers" was first used by.______

A. a pilot of a small plane

B. all officials in Washington

C. an editor of a newspaper

D. the man who flies in saucers

2. The American govemment tried to._____

A.look for the flying objects.

B. know where the objects come from

C.learn more about UFOs

D. report more about UFOs

3. The purpose of this passage is to tell us .______

A. the shape of UFOs

B. how to observe UFOs

C. the danger of UFOs

D. what we know about UFOs

4. It is implied in the passage that the author._______

A. does not believe at all about the existence of UFOs

B. believes that UFOs are real objects flying in the sky

C.is not sure whether there are UFOs or not

D.thinks that these UFOs come from other planets