Sending your child to piano or violin lessons in an attempt to improve their academic achievement is a waste of money, according to scientists. 1. research has shown that youngsters who take music lessons are more likely to be top of their class, Professor Glenn Smith claims this link is 2. (mislead).

“Music may change you a bit, but it’s also the case that different children take music lessons,” said Professor Smith of the University of Toronto, 3. added that parents’ education had most influence on musicality.

“Children who take music lessons come from families with incomes 4. (high) than average. They come from families with more 5. (educate) parents, they also do more extra-curricular activities, they are more likely to learn 6. instrument, and they do better at school.”

“We 7. (motivate) by the fact that kids who take music lessons are particularly good students. In school they actually do better than you would predict from their IQ. So 8.

(obvious) something else is going on. We thought that 9. (person) might be the thing.” Professor Smith explained, “Clearly studying music changes the brain, but so does any learning. In fact, that is 10. learning is,” he added.

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The giant Sequoia trees in California grip tightly into the floor,but with shallow root,with little depth.Constantly challenging the natural elements and fighting off destruction,the giant Sequoia is "king of the forest".These trees are so tall and strong that eventually they become their own worst enemy.For you see,the Sequoia can resist lightning, storm,and wind,but eventually their roots cannot support their own weight and strength.After hundreds or thousands of years,they tumble to the ground like giant skyscrapers that have fallen from their bases after powerful explosives are detonated（引爆）.

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2.What does the underlined word "tumble" mean?

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C. Build up. D. Break down.

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B. encourage struggling people

C. show the meaning of happiness

D. warn people about the danger of becoming strong

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C. The Meaning of Life. D. Build Firm Life Foundation.

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