Silk in China. A．produce, the southeast B．is produced, southeast C．is grown, southeast D．is produced, the southeast of 题目和参考答案——青夏教育精英家教网—

题目内容

Silk ________ in _______ China.

A．produce, the southeast	B．is produced, southeast
C．is grown, southeast	D．is produced, the southeast of

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【解析】略

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To many web-building spiders, most of whom are nearly blind, the web is their essential window on the world: their means of communicating, capturing prey（猎物）, meeting mates and protecting themselves. A web-building spider without its web is like a men cast away on an island of solid rock，totally out of touch and destined to

starve to death.

So important is the web to an orb-web spider's survival that the animal will continue to construct new webs daily even if it is being starved. For 16 days the starving spider builds completely normal webs. Then, as the animal gets scrawnier（憔悴的）， it constructs a wider-meshed web using fewer strands（线）. Such webs would only trap larger prey, which is more economical from the perspective of a starving spider.

The spider stores energy by recycling web protein. It simply eats its own web each evening and reuses it to produce new silk. In studies with radioactively，labeled materials, it was found that 95 percent of web protein reappears in the next day' web. Most of the energy needed for web-building is used in walking over the strands as they are laid down．

Scientists are impressed by the adaptability of the spider's highly preprogrammed brain, which is larger for its size than the brain of any other invertebrate（无脊推动物）．If web-building is interrupted, or if some of the existing strands are destroyed，the spider simply goes back to see where the web is left off and then finishes building a normal web. One spider will finish building the incomplete web of another.　

Which of the following best expresses the main ideas of the passage?

A. Secrets of Spiders' Adaptability B. Importance of Webs to Spiders

C. Secrets of the Spiders' Life D. Spiders' Highly Preprogrammed Brain

According to the passage, which of the following statements is TRUE?

A. Most spiders will stop conducting webs when hungry.

B. One Web-building spider usually conducts one web.

C. Web-building spiders will probably die without their webs．

D. Web-building spiders have good eyesight.

A spider conducts a wider-meshed web when____________.

A. it is 16 days old 　　　　　　B. it is getting weaker

C. it has fewer wends 　　　　　　D. it hunts for food

A spider's ability to finish an incomplete web proves that___________.

A. it has a highly preprogrammed brain B. it reuses its web protein to reproduce new silk

C. the web is everything for a spider　　　D. it is able to rebuild a destroyed web

Silk production has a long and colourful history unknown to most people. Scientific discoveries have shown that silk production existed in China from around 2500 B.C., although it could be much older. For hundreds of years, China kept the secret of silk to itself as one for the most closely protected secrets in history. Anyone revealing the secret of silkworms or trying to take silkworm eggs out of ancient China was punished by death.

At one time silk was reserved only for the Chinese emperor. Gradually, others began wearing silk. In addition to being used for clothing, silk came to have industrial uses in ancient China, something that happened in the West only in modern times. Silk was used to make musical instruments, fishing lines, weapons, ropes and even paper. During the Han Dynasty silk became a form of money. Farmers paid taxes in both rice and silk. The prices of goods were calculated in lengths of silk just as they had once been calculated in gold. The importance of silk is even reflected in the Chinese language. For example, of the 5000 most common Chinese characters, around 500 have silk as their “key”.

In spite of their secrecy, the Chinese eventually lost their monopoly on silk production. It reached Korea in around 200 B.C. when immigrants from China arrived there. Silk production came to India in 300 A.D.. It was not until 500 A.D. that silk production came to Europe when travellers smuggled out silkworms in hollow tubes of bamboo. These were used to establish silk industry in Rome (modern-day Italy), although Chinese silk was still considered to be the best.

Silk was brought to Rome from China by means of the Silk Road. There were actually two Silk Roads, one over land and one on the sea. The land route in particular had a huge effect in history. All sorts of trade goods — silver, gold, jade, porcelain — passed along this road. Ideas travelled the Silk Road too. For example the religion of Buddhism was carried to China from India by traders on the Silk Road. The Silk Road created the first international culture, exposing many people to the ideas and treasures of both Western and Chinese cultures.

1. How was China able to keep the secret of silk production?

A. It refused to sell its silk to other countries.

B. Foreigners were not permitted to enter China.

C. The silkworms needed were not able to survive outside China.

D. Chinese passing on the secret to foreigners were seriously punished.

2. Which of the following uses of silk is NOT mentioned in the passage?

A. A way of purchasing goods people sold.

B. A material used for making different products.

C. A method of paying money to the government.

D. A valuable gift given to foreigners travelling in China.

3.In what order did silk production spread throughout the world according to the passage?

A. Europe à India à Korea à China. B. China à Korea à India à Europe.

C. China à India à Korea à Europe. D. China à Europe à India à Korea.

4.The underlined phrase “smuggled out” in Paragraph 3 is closest in meaning to ________.

A. quietly traded B. openly removed

C. illegally transported D. violently stole

5.Which of the following is true about the Silk Road?

A. It allowed for economic and cultural exchanges between countries.

B. It made China the most powerful country in the ancient world.

C. It could only be completed by travellers with access to a boat.

D. It was first developed for transferring religious ideas.

To many web-building spiders, most of whom are nearly blind, the web is their essential window on the world: their means of communicating, capturing prey, meeting mates and protecting themselves. A web-building spider without its web is like a men cast away on an island of solid rock，totally out of touch and destined to starve to death. So important is the web to an orb-web spider's survival that the animal will continue to construct new webs daily even if it is being starved. For 16 days the starving spider builds completely normal webs. Then, as the animal gets scrawnier, it constructs a wider-meshed （网孔、网眼）web using fewer strands（线）. Such webs would only trap larger prey, which is more economical from the perspective of a starving spider. The spider stores energy by recycling web protein. It simply eats its own web each evening and reuses it to produce new silk. In studies with radioactivity, labeled materials, it was found that 95 percent of web protein reappears in the next day web. Most of the energy needed for web-building is used in walking over the strands as they are laid down. Scientists are impressed by the adaptability of the spider's highly preprogrammed brain, which is larger for its size than the brain of any other invertebrate（无脊推动物）. If web-building is interrupted, or if some of the existing strands are destroyed, the spider simply goes back to see where the web is left off and then finishes building a normal web. One spider will finish building the incomplete web of another.

1.Which of the following best expresses the main ideas of the passage?

A. Secrets of Spiders' Adaptability

B. Importance of Webs to Spiders

C. Secrets of the Spiders' Life

D. Spiders' Highly Preprogrammed Brain

2.According to the passage, which of the following statements is TRUE?

A. Most spiders will stop conducting webs when hungry.

B. One Web-building spider usually conducts one web.

C. Web-building spiders will probably die without their webs.

D. Web-building spiders have good eyesight.

3.The underlined word “scrawnier” in the second paragraph probably means ______.

A. weaker but good-looking

B. fatter and stronger

C. nice and healthier

D. thinner and bony

4.A spider's ability to finish an incomplete web proves that ______.

A. it has a highly preprogrammed brain

B. it reuses its web protein to reproduce new silk

C. the web is everything for a spider

D. it is able to rebuild a destroyed web

将下列句子变为被动语态，每空一词：

1. We can finish the work in two days.

The work ________ _________ _________ in two days.

2. They produce silk in Suzhou.

Silk _________ _________ in Suzhou.

3. The children will sing an English song.

An English song ________ _________ ________ by the children.

4. You needn't do it now.

It _________ _________ _________ by you now.

5. Lucy sent me a New Year Card last week.

A New Year Card _________ _________ ________ me by her last week.

6. Peole use metal for making machines.

Metal _________ _________ for making machines.

7. He made me do that for him.

I _________ ________ ________ _________ that for him.

8.I have given this book to the library.

This book _______ ________ ________ to the library.

9.Did they build a bridge here a year ago?

________ a bridge _________ here by them a year ago?

10.We'll put on an English play in our school.

An English play _________ __________ ___________ on in our school.

11.More and more farmers buy colour TV sets.

Colour TV sets _________ __________ __________ more and more farmers.

12.My brother often mends his watch.

His watch __________ __________ _________ by my brother.

13.We must water the flowers every day.

The flowers must ________ _________ (by us) every day.

14.They use knives for cutting things.

Knives _________ _________ for cutting things.

15.He made the farmers work for a long time.

The farmers _________ _________ __________ _________ for a long time.

16.Did he break the window yesterday?

________ the window _________ __________ __________ yesterday?

17.They have sold out the light green dresses.

The light green dresses __________ __________ __________ out.

18.We clean the classroom every day.

The classroom _________ _________ every day.

19. You must not plant trees in very dry earth.

Trees _________ _________ __________ __________ in very dry earth.

20.You can dig a hole in the earth.

A Hole _________ __________ __________ in the earth.

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