Many people say that they have seen flying saucers（飞碟）in the sky.   31   can these things be ?

Some people think that they are spaceships from other planets. Doctors   32   that perhaps they are only a weakness of the eyes. It is possible that they are our own planes   33   very high. Or are they birds with the sun’s light on them?

But some people say that they have seen them   34  . They have seen beings（人）get off them and walk around. They have   35   to those beings, sometimes in English. People have   36   photos of flying saucers and of these beings. We have seen the photos, but sometimes the people had to take them in a   37  . Children have seen flying saucers, and even dogs have seen them. Perhaps we do not think that the   38   of children, or dogs are important. But school-teachers have   39   seen them and Air Force officers and   40   policemen. Must we not listen to these people?

1.A. How                           B. What             C. Which           D. Where

2.A. say                            B. prove             C. know            D. understand

3.A. rising                           B. flying             C. risen             D. flown

4.A. fly                              B. turn              C. land             D. move

5.A. flown                          B. gone           C. come             D. spoken

6.A. received                         B. bought            C. taken            D. sent

7.A. horse                            B. hurry              C. colour            D. way

8.A. opinions                       B. discussions        C. suggestions        D. needs

9.A. often                          B. hardly            C. also              D. still

10.A. yet                          B. even             C. so               D. then

Many people say that they have seen flying saucers（飞碟）in the sky.   31  can these things be ?
Some people think that they are spaceships from other planets. Doctors   32  that perhaps they are only a weakness of the eyes. It is possible that they are our own planes   33  very high. Or are they birds with the sun’s light on them?
But some people say that they have seen them   34 . They have seen beings（人）get off them and walk around. They have   35   to those beings, sometimes in English. People have   36   photos of flying saucers and of these beings. We have seen the photos, but sometimes the people had to take them in a   37 . Children have seen flying saucers, and even dogs have seen them. Perhaps we do not think that the   38  of children, or dogs are important. But school-teachers have   39  seen them and Air Force officers and   40  policemen. Must we not listen to these people?
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