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Tests with artificial stars have proved that certain night-flying birds are able to follow the stars in their long-distance flights.

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【简答题】If an economist were asked which of three groups borrow most--people with rising incomes, stable incomes, or decreasing incomes, his probable answer would be those with decreasing incomes.
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【简答题】Although English is not as old as Chinese, it is spoken by many people around the world every day.
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【单选题】When a disease of epidemic proportions rips into the populace, scientists immediately get to work, trying to locate the source of the affliction and find ways to combat it. Oftentimes, success is achi...
A.
dispose of it naturally.
B.
combat against it readily.
C.
attend to it reluctantly.
D.
split it up properly.
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【简答题】Dead mail will also be listed on a computer so that people can call in and check to see if a missing item is there.
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【简答题】Pollution is caused either by man’s release of completely new and often artificial (人造) substances into the environment, or by releasing greatly increased amounts of a natural substance (物质), such as ...
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【单选题】SECTION A CONVERSATIONS In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow. Questions 1 to 3 are based on the follow...
A.
The outlook.
B.
The personality.
C.
The minor details.
D.
The lightening.
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【简答题】若想通过以下输入语句使a=5.0，b=4，c=3，则输入数据的形式应该是 【10】 。 int b,c；float a； scanf("%f,%d,c=%d",&a,&b,&C)
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【简答题】简述西方国家司法行政机关的主要职能。
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【简答题】If your father is a steelworker or a truck driver or a doctor or a grocer, he is producing goods or service for the market.
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