题目内容
A．remainB．supplyC．supportD．retain
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A．In an airplane.B．In a restaurant.C．In a hotel.D．In a store.
Not long ago, experiments showed that birds depend on the sun to guide them during day-flight hours. But what about birds that fly by night？ Tests with man-made stars have proved that certain night-flying birds are able to follow the stars in their long-distance flights.
A dove spent its lifetime in a cage and had never flown under a natural sky. Yet it showed an inborn ability to use the stars for guidance. The bird's cage was placed under a man-made star-filled sky. The bird tried to fly in the same direction as that taken by his outdoor cousins. Any change in the position of the make-believe stars caused a change in the direction of his flight.
Scientists think that doves, flying ill daylight, use the sun for guidance. But the stars are obviously their most important means of navigation (or flying). What do they do when the stars are hidden by clouds？ Obviously, they find their way by such landmarks as mountains ranges, coastlines, and river courses. But when it is too dark to see these, the doves circle helplessly, unable to get their bearings.
The reason why birds don't get lost on long flight ______.
Section B
Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. The dialogues and questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D.
听力原文：M: Nice working with you. I hope we can do business again.
W: Yes. I would like that.
Q: What is the relationship between the two speakers？
(11)
会计主体与有关方面发生经济纠纷，会计凭证可以作为法律证据提交仲裁机构用以维护会计主体的合法权益。 ()
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