In the next century we'll be able to alter our DNA radically, encoding our visions and van

A.mockery

B. laugh

C. smile

D. sneer

century medicine did little to increase the natural life-span of healthy humans.The next medical revolution will change that,because genetic engineering has the potential to conquer cancer,grow new blood vessels in the heat,block the growth of blood vessels in tumors,create new organs from stem cells and perhaps even reset the primeval genetic coding that causes cells to age.

查看材料

A.There have been attempts to start a professional soccer organization in the U．S．．

B.In the 12th century soccer games in Britain often involved whole towns．

C.Professional soccer grew quickly in Europe．

D.Experts believed that the United States would win．

er and harder to predict. Change is coming so fast that some of the most important technologies of the 21st century may now be just a sketch on the drawing board or glimmer in the mind of genius. Then again, the transcendent technologies may be right under our noses on the verge of having as great an impact as the car or telephone.

根据以下材料回答题

Sometime in the next century, the familiar early-newspaper on the front gate will disappear．

And instead of reading your newspaper, it will read to you．You&39; 11 get up and turn on the computernewspaper just like switching on the TV．An electronic voice will distribute stories about the latestevents, guided by a program that selects the type of news you want．You&39; 11 even get to choose thekind of voice you want to hear．Want more information on the brief story？ A simple touch makesthe entire text appear．Save it in your own personal computer if you like．These are among the pre-dictions from communication experts working on the newspapers of the future．Pictured as part ofbroader home-based media and entertainment systems, computer newspapers would unite print andbroadcast reporting, offering news and analysis with video images of news events．

Most of the technology is available (可用的 ) now, but convincing (说服) more people thatthey don&39; t need paper to read a newspaper is the next step．But resistance to computer newspapersmay be stronger from within journalism．

Since it is such a cultural change, it may be that the present generation of journalists and pub-lishers will have to die off before the next generation realize that the newspaper industry is no lon-ger a newspaper industry．Technology is making the end of traditional newspapers unavoidable．

Despite technological advances, it could take decades to replace newsprint with computerscreens．It might take 30 to 40 years to complete the changeover because people need to buy com-puters and because newspapers have established financial(财经的) interests in the paper industry．

What is the best title for this passage？ 查看材料

A.Computer Newspapers Are Well Liked

B.Newspapers of the Future Will Likely Be on Computer

C.Newspapers Are out of Fashion

D.New Communication Technology

fork, and dives into his food, someone is likely to repeat that saying.

The fork was an ancient agricultural tool, but for centuries no one thought of eating with it. Not until the eleventh century, when a young lady from Constantinpole brought her fork to Italy, did the custom reach Europe.

By the fifteenth century the use of the fork was widespread in Italy. The English explanation was that Italians were averse to rating food touched with fingers, "Seeing all men's fingers are not alike clean." English travelers kept their friends in stitches while describing this ridiculous Italian custom.

Anyone who used a fork to eat with was laughed at in England for the next hundred years. Men who used forks were thought to be sissies, and women who used them were called show - offs and overnice. Not until the late 1600's did using a fork become a common custom.

The custom of eating with a fork was ______ .

A．brought to Europe from America

B．begun when forks were invented

C．brought to Europe from Asia

D．invented by Italians

who discovered they could add lifelike qualities to drawings of animals and other figures on the walls of caves by mixing the natural colors found in the earth with water.

Fresco, one of the greatest of all art forms, is done with watercolor. It is created by mixing pigments and water and applying these to wet plaster. Of the thousands of people who stand under Michelangelo's heroic ceiling in the Sistine Chapel, very few are aware that they are looking at perhaps the greatest watercolor painting in the world.

The invention of oil painting by the Flemish masters in the fifteenth century led to a decline in fresco painting, and for the next several centuries watercolor was used mainly as a medium for doing preliminary sketches or as a tool for study. It was not until the eighteenth and nineteenth centuries that English painters reinstated watercolor as a serious art form. The English have a notorious love for the outdoors and also great fondness for small, intimate pictures. The subdued tones of watercolor had a remarkably strong appeal for them.

The popularity of watercolor continued to grow until in the twentieth century the United States passed England as the center for watercolor, producing such well - known watercolor artists as Thomas Eakins and Andrew Wyeth.

What is the main theme of the passage？

A．The decline of fresco painting.

B．The predominance of oils over watercolor.

C．The rediscovery of watercolor in England.

D．The origin and development of watercolor.

Passage Five

Roman soldiers in some places built long rows of signal towers. When they had a message to send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.

In Africa, people learned to send messages by beating on a series of large drums (鼓). Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.

In the eighteenth century, a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet (字母表). It was like spelling out words with flags and arms.

Over a long period of time, people sent messages by all these different ways. However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.

51. According to this passage, the Roman way of communication depended very much on______.

A. fine weather

B. high tower

C. the spelling system

D. arm movements

fork， and dives into his food， someone is likely to repeat that saying.

The fork was an ancient agricultural tool， but for centuries no one thought of eating with it. Not until the eleventh century， when a young lady from Constantinople brought her fork to Italy， did the custom reach Europe.

By the fifteenth century the use of the fork was widespread in Italy. The English explanation was that Italians were averse to eating food touched with fingers， “Seeing all men‘s fingers are not alike clean.” English travellers kept their friends in stitches while describing this ridiculous Italian custom.

Anyone who used a fork to eat with was laughed at in England for the next hundred years. Men who used forks were thought to be sissies， and women who used them were called show-offs and overnice. Not until the late 1600‘s did using a fork become a common custom.

76. The custom of eating with a fork was _______.

A.brought to Europe from America

B.begun when forks were invented

C.brought to Europe from Asia

D.invented by Italians

To English travellers in Italy， the use of forks seemed _______.A.clever

B.necessary

C.good manner

D.ridiculous

By the fifteenth century forks were used _______.A.all over Italy

B.only in Constantinople

C.widely in Europe

D.In England

In England， people who used forks at that time were considered ______.A.well mannered

B.sissies

C.show-offs and overnice

D.both B and C

The English thought that Italians used forks in order to ________.A.imitate the people of the East

B.keep their food clean

C.impress visitors with their good manners

D.amuse the English

请帮忙给出每个问题的正确答案和分析，谢谢！

o,the heritage of the frontier is still very much alive in the U.S.today.The idea of the frontier still stirs the emotions and imaginations of the American people.Americans continue to be fascinated by the frontier because it has been a particularly important force in shaping their national values.The frontier experience began when the first colonists settled on the east coast of the continent in the 1600s.It ended about 1890 when the last western lands were settled.The American frontier consisted of the relatively unsettled regions of the country.Here,both land and life were more rugged and primitive than in the more settled eastern part.As one frontier area was settled,people began moving farther west into the next unsettled area.By settling one frontier area after another,Americans moved across an entire continent,2,700 miles wide.

Compared with the eastern part of the country,the unsettled frontier land and life were ()

A、more civilized and interesting

B、dull and primitive

C、rugged and unbearable

D、rough and primitive