-What’s wrong with you?-I the wall while I was riding a bike.A. knocked at B. knocked into C. knocked on D. knocked by 题目和参考答案——青夏教育精英家教网—

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( )23. —What’s wrong with you?

—I_the wall while I was riding a bike.

A. knocked at B. knocked into C. knocked on D. knocked by

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( )18. Over 100 . people around the world are interested in playing basketball.

A. million B. million of C. millions D. millions of

39.我们的父母劝我们不要独自外出。

Our parents____go out alone.

( )11. My mother told me that my homework must_on time.

A. finish B. be finish C. finished D. be finished

( )18. She tried many times to pass the exam, and_the end, she succeeded.

A. by B. at C. in D. to

Almost everyone invents, but they do not recognize that their idea is an invention. Most inventors do not get credit (荣誉）for their ideas. That was true in the past and

today. The reason is simple, most inventors lack(缺少）the other skills they need to let people know what they have created and why their inventions are good.

Many inventions have little or nothing to do with science. But an understanding of science is often needed to make your invention work. And it is also important to be able to make the invention at a price that people can afford. Science will help you make choices on the best way and materials to make your invention.

Understanding business is also important. Most inventors have to make and sell the invention themselves. Big established businesses are usually not interested in an invention until they see their customers buying from the inventor.

You may be able to invent without understanding reading, writing, math, history and science. But you may not profit from inventing without all of those skills. You need to be able to read well to learn new skills. All the good ideas in the world are useless if you do not have the writing skills to be able to tell other people how and why your invention is valuable. You often need math to figure out(计算出）how to make your invention and you always need math to figure out the cost to make and sell the invention. And you almost always need science to make the invention at the lowest cost.

( )46. Why don’t most today’s inventors get credit?

A. Because they don’t sell their inventions.

B. Because they don’t recognize their ideas as inventions.

C. Because they lack of some other skills.

D. Because they don’t know why there is better than previous inventions.

( )47. Science can help an inventor_.

A. sell the inventions at a high price

B. choose the best way to invent

C. choose the materials to make inventions

D. Both B and C.

( )48. Which of the following is true?

A. Few inventions have nothing to do with science.

B. Only science can help inventors invent.

C. Big established businesses are interested in inventions which customers want to buy.

D. It’s unnecessary to understand reading,writing,math,history and science.

( )49. The underlined word “profit” means .

A.获益 B.想出 C.收获 D•创造

( )50. What’s the main idea of this passage?

A. Everyone can invent some inventions.

B. We should have some other skills if we invent.

C. Understanding business is important for inventors.

D. How can we get credit from their inventions?

9. need to do sth._ 10. take photos_

3. hurt oneself_ 4. give sb. a hug_

26. Let’s not watch TV at home. Let’s go to the mountains.(合并为一*句）

Let’s go to the mountains__watching TV at home.

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