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“I will think of it.” It is easy to say this, but do you know what great things have come from thinking?
Sir Isaac Newton was sitting in his garden when he saw an apple fall from a tree. He began to think and tried to find out why the apple fell. Then he discovered how the sun, moon, and stars are kept in their places.
A boy named James Watt sat quietly by the fire, watching the lid of the kettle move up and down. He wanted to find out why the steam in the kettle moved the lid. From that time he went on thinking and thinking. And when he became a man, he improved the steam engine (蒸汽机) so much that it could easily do the work of many horses.
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James Ferguson was a poor boy. Once, seeing the inside of a watch, he wondered. “Why should I not make a watch?” But how could he get the materials to make the mainspring (钟表的主发条)? He soon found he could make it with whalebone (鲸骨). He then made a wooden clock which kept good time. His motto (座右铭) was “I will think of it.” And he made his thoughts useful to himself and the world.
Boys and girls, when you have a difficult lesson to learn, don’t lose heart, and don’t ask someone for help before helping yourselves. Think, and by thinking you will learn how to think to some purpose.
1.From the passage, we know that some great things come from ______.
A. listening B. reading
C. speaking D. thinking
2.The idea of Isaac Newton’s discovery was from ______.
A. the falling of an apple
B. the cleaning of a garden
C. the falling of a tree
D. the moving of a lid
3.The achievement of James Watt was that he ______.
A. kept thinking
B. found the steam in the kettle
C. improved the steam engine much
D. watched the lid move up and down
4.The right order of the following sentences is ______.
① James Ferguson made a wooden clock.
② James Ferguson saw the inside of a watch.
③ James Ferguson made the mainspring with whalebone.
A. ③ ② ① B. ② ③ ①
C. ② ① ③ D. ③ ① ②
5.What is the main idea of the passage?
A. Learn to ask for help.
B. A difficult lesson to learn.
C. It is easy to say “I will think of it.”
D. Think, and by thinking you will learn how to think to some purpose.
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Your brain controls everything you do. It makes it possible for you to think, Learn, create and feel; to blink(眨眼) and breathe and for your heart to heat –this fantastic control center is your brain. It is so amazing that a famous scientist once called it " the most complex(复杂) thing we have yet discovered in our universe".
Can this small grey organ(器官) , which weighs less than one and a half kilos,
really do so much? Amazingly , your brain contains about 100 billion neurons(神经元) -it would take you over 3 ,000 years to count them all. Believe it or not, the activity in your brain never stops. Your neurons create and send more messages than all the phones in the world. And although one neumn creates only a little electricity, all your neurons together can produce enough electricity to power a light bulb (灯泡).
So exactly how fast does your brain work? Well, imagine this: a bee lands on your foot. Neurons in your skin send this information to your brain at a speed of more than 240 kilometers per hour. Your brain then uses other neurons to send the message back to your foot to shake the bee off quickly. These neurons can send this information at more than 320 kilometers per hour. No computer has your hrain's unbelievable ability to deal with the amount of information coming from your eyes, ears and other sensory organs.
But how does your brain allow you to leam things Lhat you will use in the future? The structure (结构) of your brain changes every time you have a new thought, remember or leam something. For example, riding a bike seems impossible at first, but soon you are able to do it. How? As you practice, your brain sends "bike riding" messages again and again Soon, the actions are learnt and you are able to ride a bike easily from then on.
1. From the passage we know that neurons______________ .
A. receive messages very slowly
B. are only found in your skin
C. send messages to your brain
D. need electricity to work
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A. compare them wich the human brain
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C. say that computers have no abilities
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Walking requires no special equipment (装备). It is a kind of exercise that almost any normal, healthy person can do. Walking is good for your health like jogging or running; it will just take longer. Jogging and running make your heart work harder than walking. They also put more stress on your legs and feet than walking does.
The problem with walking is that most people don’t take it seriously. But there’s a big difference between serious walking and the walking that most of us do. Walking, like jogging, should have a steady and continuous motion (稳健而持续的动作).
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1.make
2.
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A. Have a walking plan.
B. Walk fast at the beginning.
C. Start by walking an hour a day.
D. Increase distance and speed little by little.
1. 2.
任务五5. 找出最后一段的主题句。
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