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Adults are often surprised by how well they remember something they learned as children but have never practised in the meantime. A man who has not had an opportunity to go swimming for years can ___21___ swim as well as ever when he gets back in the water. He can get on a bicycle after several decades and still 22 away. A mother who has not 23 the words for years can teach her daughter the poem that begins "Twinkle, twinkle, little star" or recite the story of Cinderella or Snow White.
　　One explanation is the 24 of over learning, which can be stated as following: Once we have learned something, additional learning increases the 25 of time we will remember it.
　　In childhood, we usually continue to practise such skills as swimming, bicycle riding long after we have learned them. We continue to listen to and 26 ourselves of poems such as "Twinkle, twinkle, little star" and childhood tales such as Cinderella or Snow White. We not only learn but __27 .
　　The law of over learning explains why cramming (突击学习) for an examination, though it may result in a(an) 28 grade, is not a 29 way to learn a school course. By cramming, a student may learn the subject well enough to get by on the examination, but he is likely soon to forget almost everything he learned. A little over learning, 30 , is usually a good investment toward the future.
　　21. A. only B. hardly C. still D. even
　　22. A. move B. drive C. travel D. ride
　　23. A. thought about B. cared for C. showed upD. brought up
　　24. A. result B. lawC. rule D. cause
　　25. A. accuracy B. unit C. limit D. length
　　26. A. remind B. inform C. warm D. recall
　　27. A. recite B. overlearn C. researchD. improve
　　28. A. passing B. average C. excellent D. discouraging
　　29. A. convenient B. demanding C. satisfactory D. swift
　　30. A. at mostB. by the way C. on the other handD. in the end

When an animal helps another animal, it usually gets something valuable in return. For a long time, many scientists thought that only people could act generously just because it feels good.
However, a new study in Germany suggests that chimpanzees (黑猩猩)also do good things for no real reason. And so do children who are as young as 18 months of age. Maybe it is because humans and chimpanzees share an ancestor(祖先) about 6 million years ago.
People and chimpanzees appear to develop such features(特征) without any other training, says Warneken, a scientist in Germany. Warneken and his partners worked on adult chimpanzees that live on an island in the African country of Uganda. They also worked with 18-month-old children in Germany. The researchers performed three experiments on the adult chimpanzees and two experiments on the kids. In the first animal experiment，a person tried to reach his arm into a cage to get a stick，but he couldn’t reach it. A chimpanzee was in the cage，and it could reach the stick if it wanted to.
Thirty-six chimpanzees took part in this experiment one by one, and no chimpanzee saw what the other chimpanzees had done. Even though the animals hadn’t met the person before, they usually took the stick and gave it to the person. What’s more, they did this whether or not the person offered them bananas as a reward. In a similar experiment, 36 children acted in a similar way. They helped the person reach the stick, whether or not they were offered toys for their help.
Researchers did other experiments on chimpanzees and babies. No rewards were offered in either experiment. And still, both the chimpanzees and children went out of their way to help. Still, the new study is different from earlier findings. Researchers have found that chimpanzees don’t give rewards of food to other chimpanzees, even if it costs them nothing to be generous.
小题1:Warneken and his partners worked with ________.

A．young chimpanzee that live on an island

B．18-month-old children who live in Germany

C．kids who are living with adult chimpanzees

D．adult chimpanzees that live on the African mountain

小题2:A new study in Germany suggests that ________.

A．people also share information for good reason

B．children know something at the age of 18 months

C．chimpanzees do good things for no real reason, too

D．humans should develop their abilities 6 million years ago

小题3: Which of the following is NOT true according to the passage？

A．Thirty-six chimpanzees joined in this experiment one by one

B．No chimpanzee saw what the other chimpanzees had done

C．The animals hadn’t met the person before the experiments

D．Chimpanzee gave the person the stick in order to get a reward

小题4:From the passage we know that ________.

A．both chimpanzees and children can find their way to help others

B．chimpanzees will reward good food to other chimpanzees

C．children is more generous than chimpanzees in some ways

D．both chimpanzees and children can do the difficult experiments

A hobby is not a job or a school subject. A hobby is something you enjoy doing in your spare time. It’s not something you need to do. It’s just fun. Some people make model ships, keep pets, plant flowers, play computer games or chat on the Internet. Some paint pictures or dance to music. Some collect everything from stamps to seashells (海贝壳)…．People take up hobbies because they think these activities can bring them many things like happiness, friendship and knowledge. Anyone, rich or poor, old or young, sick or well, can have a hobby. A hobby will make your life colorful.
小题1:What is a hobby?

A．A job.

B．A school subject.

C．Something interesting.

D．Something you enjoy doing in your spare time.

小题2:.How many hobbies are mentioned(提到) in this passage?

A．7.

B．8.

C．9.

D．10.

小题3:Hobbies can bring people _______.

A．much money

B．health

C．happiness, friendship and knowledge

D．lots of trouble

小题4:What kind of people can have a hobby?
A. Rich or poor. B. Old or young. C. Sick or well. D. A、B and C.
小题5:When do people often take up hobbies?

A．In their work time.	B．In the daytime.
C．In their free time.	D．In the holiday.

If you can’t get to sleep, then get up and try to do something,
lying in bed.
A． and B． or C． instead of

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