1、In 1947 the pilot of a small aeroplane saw nine strange objects in the sky over Washington. He said that they looked like    21   . Newspapers printed his story under the   22    "Flying Saucers".

Since then, all over the world, people have  23    seeing similar strange objects. No one knows  24   they are or where they come from. Some people say that they do not   25  , but many others say that they have seen them. Usually people on the ground have seen them  26  not always. Airline   27    also have reported seeing them and so have   28    ── the men who fly in spaceships.

Perhaps some people saw them only in their   29  . Perhaps some people made a mistake. But airline pilots and astronauts do not usually make   30    of this kind. Captain Ed Mitchell, who was the sixth man to  31    on the moon, said in 1974 that he believes that some "flying saucers" are  32   . Many other people now believe that these   33    flying objects are visiting the   34    from other worlds in space.   

The American government   35    to find out more about these objects. It listened to a great many people who said they had  36   them. But the Government Committee could not decide on what the objects were. It called them UFOs, which is   37   for "Unidentified Flying Objects".

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   38    near it. They looked like little men. When he reported on his radio, they got inside the object and   39  away.

There are many other   40   stories. Some are probably untrue but some may be true. No one knows.

34、 I’ll probably see you on Sunday; 　　　　, it will be on Monday.

A. thus      B. then      C. after all      D. if not

33、―I really like the modern digital camera you lent me last week.

―　　　　.

―And thank you very much for letting me keep it so long.

A. I’m glad you like it      B. Don’t mention it

C. I hope you like it           D. That’s all right

32、No matter _____, you must keep trying.

   A. how difficult does it seem                B. however it seems difficult

   C. however seems it difficult                D. how difficult it seems

31、_____bilingual education in one’s early childhood is getting more and more popular in Shanghai now.

   A. Receive          B. Receiving          C. Received       D. Having received

30、When a ship that sank in 1628 was recovered from the port of Stockholm, the scientists were overjoyed with the chance _____ the remains of the past.

A. examine                   B. examining          C. to examine                D. examined

29、The scientists are trying to find out what ______ caused the dolphins to strand themselves, a strange animal behavior hard to understand.

     A. was it that            B. that was that    C. was that which      D. it was that

28、The government has revised the budget, 5% of______ will be used to help develop the medium  and small sized enterprises.

     A. that                  B. whose        C. which            D. as

27、You may depend on ____that your parents will help you whenever you need it.

A. them        B. yourself        C. it              D. me

26、Unlike watching TV, reading is a highly active process _____ it requires attention as well as memory and imagination.

A. until        B. bit            C. unless          D. for