阅读下面短文,根据短文内容回答1~4题,并按要求完成第5题。

Do you know what are the world's tallest animals?

How do they sleep and drink?

You may think it's difficult for them to sleep, but they have no such problems because giraffes don't often stop for a snooze(打盹). As they are so tall-males can grow up to 18 feet, giraffes actually have the shortest sleep requirement of all mammals(哺乳动物) ,with an average(平均 ) of half an hour a day. When they sleep, they seldom lie down and sleep for minutes at a time, since it's difficult for them to get up again and it's dangerous in the wild. But the giraffe in the zoo sleeps around 4. 6 hours per day, mostly at night. It usually sleeps lying down

Drinking water may cause problems for the animals because their long necks are too short to reach the ground. To drink they must spread their legs in an uncomfortable position, which makes them easily hunted by other animals like Africa's big cats. As a result, they get most of their water from the plants that they eat. They only need to drink water every few days.

1.How long do giraffes living in the wild sleep every day?

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2.How does the giraffe in the zoo usually sleep?

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3.What must giraffes do to drink water?

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4.What's the main idea of the passage?

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5.请将画线句子翻译成汉语。

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Do you have the experience of taking music lessons against your wishes?Perhaps you have complained about it because you thought it took you much playtime.But now you'd better thank your parents for their time and money spent on your musical training.A recent study suggests music lessons can make children have better memories than their peers (同龄人).

The Canadian study showed that after one year of musical training,children did better on a memory test than those who didn't take music lessons.

The researchers made the children aged between 4and 6into two groups-one group of children took music lessons outside school,and the other didn't take any musical training.In one year,they took four tests in different times.The results showed brain (大脑) development changes at least every four months.

The children taking music lessons not only did better in musical listening but also made faster progress in other ways,such as reading,writing,Maths and IQ.

People say music is the good medicine for a broken heart.Now it seems music can also help us to improve our memories.We are sure to find more and more in the wonderful world of music.

1.You'd better thank your parents for their time and money spent on your musical training because ______ .

A. you get well after you take music lessons

B. you will make faster progress in every way

C. music can help you to improve your memories

D. music lessons have taken up most your free time

2.The researchers made one group of the children aged 4~6take music lessons for ______ .

A. six months B. a year C. two years D. four years

3.The Canadian study showed that brain development changes ______ .

A. once a week B. twice half a year

C. four times a year D. at least every four months

4.According to the last paragraph,most people think music can make us ______ .

A. happy B. worried C. lazy D. confident

5.What does the passage mainly tell us? ______

A. How to become cleverer.

B. Music does us much good.

C. What to find in wonderful music.

D. Everyone should receive music training.

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