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　　What do you do at weekends?Some people like to 　　1　　 at home,but others like to go for a walk 　　2　　 have a picnic．My friend Jack works hard in a factory during the 　　3　　．At weekends he always 　　4　　 the same things．On Saturday he 　　5　　 his car and on 　　6　　 he takes his family to a nearby village．His uncle and aunt have a farm there．It isn't a 　　7　　 one,but there's always 　　8　　 to do．The children help to give animals 　　9　　．Jack and his wife help in the fields,too．At the end of the day,they are all 　　10　　 and Jack's aunt gives them a big meal．

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　　When you hear the word “scitentist”, what do you think of? Many people think scientist are people in clean white coats who work in labs．And some scientists do work in labs．But there are 　　1　　 scientist who work in woods and jungles．These scientists are called “animal behavior(行为)scientists”, and they study animals as they live in nature．

　　Why don’t these scientists catch animals and study them in zoos? The 　　2　　 is in the word “behavior”．Animals behavior scientists want to learn 　　3　　 animal behave in their wild homes．When animals live in cages(笼子)or in zoos, they do not act the same as they do when they are 　　4　　．They may fight 　　5　　 each other, or they may not eat, or they may not raise(抚养)their babies as they usually would．To see real animal behavior, scitentists must go where the animals 　　6　　．

　　So animal behavior scientists go into the jungles, the woods or the desert．There, their most important 　　7　　 are their eyes and ears．They watch and listen to the animals very 　　8　　．They write down everything that happened in notebook．　　9　　 they live near the animals, the scientists are careful not to frighten them．If the scientists are luncky, the animals will 　　１０　　 no attention to them．Then the scientists can see how the animals really live．

　　The behavior scientists hope what they’ve learned about animal behavoir can provide clues(提供线索)to help people learn to live together more happily．

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