Venice, one of the cities in Italy, was founded in A.D.811 by the people of Malamocco, fleeing（逃跑）from the Franks. It was said that they were guided by pigeons carrying little crosses, and settled where now Venice lies.

Venice is built on 117 islands. It has 150 canals and 400 bridges. The narrow streets, with their historic names, are covered with stones, but have no footpaths. They are dotted with flowershop signs and lanterns. Shops and palaces stand by side. The brick bridges are high enough to allow boats to pass freely under them.

The center of public life is St. Mark’s Square where tourists and citizens sit in the famous Florian and Quadri cafes to listen to music, enjoying themselves. The Quadri is more popular but the Florian, founded in 1720, is the best-known cafe because it has received such great persons as Byron (an English poet) and Goethe (a German poet).

Unfortunately the special position of Venice is threatening（威胁）its own existence. The terrain（地势）on which it is built began to sink while the level of the surrounding waters is constantly rising. However, many measures have already been taken to prevent the city from sinking.

In the second paragraph, the author _______.

Which of the following shows the right relationship?（○=Italy; △=Venice; □=St. Mark’s Square）

Why is the Florian the famous cafe? Because _________.

From the article we can see that _______.

  The Atlantic Ocean is one of the oceans that separate the Old World from the New. For centuries it kept the Americans from being discovered by the people of Europe.

       Many wrong ideas about the Atlantic made early sailors unwilling to sail far out into it. One idea was that it reached out to “the edge of the world.” Sailors were afraid that they might sail right off the earth. Another idea was that at the equator（赤道）the ocean would be boiling hot.

       The Atlantic Ocean is only half as big as the Pacific, but it is still very large. It is more than 4,000 miles (6,000km) wide where Columbus crossed it. Even at its narrowest it is about 2,000 miles (3,200km) wide.

       Two things make the Atlantic Ocean rather unusual. For so large an ocean it has very few islands. Also, it is the world’s saltiest ocean.

       There is so much water in the Atlantic that it is hard to imagine how much there is. But suppose no more rain fell into it and no more water was brought to it by rivers. It would take the ocean about 4,000 years to dry up. On the average the water is a little more than two miles (3.2km) deep, but in places it is much deeper. The deepest spot is near Puerto Rico. This “deep” measures 30,246 feet-almost six miles (9.6km).

       One of the longest mountain ranges of the world rises from the floor of the Atlantic. This mountain range runs north and south down the middle of the ocean. The tops of a few of the mountains reach up above the sea and make islands.

       Several hundred miles eastward from Florida there is a part of the ocean called the Sargasso Sea. Here the water is quiet, for there is little wind. In the days of sailing vessels（船）the crew were afraid they would be becalmed（停滞不前）here. Sometimes they were.

       Today the Atlantic is a great highway. It is not, however, always a smooth and safe one. Storms sweep across it and pile up great waves. Icebergs（冰山）float down from the Far North across the paths of ships.

       We now have such fast ways of traveling that this big ocean seems to have grown smaller. Columbus sailed for more than two months to cross it. A fast modern steamship can make the trip in less than four days. Airplanes fly from New York to London in only eight hours and from south America to Africa in four!

TIANJIN, Feb. 6 - The computer viruses known as "Kompu" and "Happytime" will attack China next week, but damage will be limited, predicted the Tianjin-based National Computer Virus Emergency Response Center on Sunday.

The center - the only anti-virus products testing and certification center authorized by the Chinese Ministry of Public Security - raised the alert about the two viruses, which are expected to hit the country from Feb. 6 to 12.

The experts explained that the Wm_Kumpu virus originated in Estonia and appears on the computer screens with the messages "Mul on paha tuju!" and "Tahan kommi", which mean "I am in bad mood" and "Give me some candy".

The Vbs_Happytime, a virus in e-mail attachments, can eliminate.exe and .dll files in the computer hard disks.

Experts warned computer users who may log on to the Internet to receive mail or visit Internet chat rooms when they finish the week-long Spring Festival vacation and return to work on Monday.

The center advised computer system maintenance technicians to scrutinize their systems and upgrade anti-viral software as precautions against the viruses, before the routine working week starts on Monday.

Experts with the center said that there is no need to immediately format computer hard drives stricken with the viruses, since the viruses can not possibly damage all data on the hard disk in a short period of time. Computer users can use software and tools to restore the lost data.

At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were  (1)  to show that we all have “a body clock”  (2)  us, which controls the  (3)  and fall of our body energies,  (4)  us different from one day one to the next.

The   (5)  of “a body clock” should not be too  (6)  since the lives of most living things are controlled  (7)   the 24 hour night-and-day cycle. We feel  (8)  and fall asleep at night and become   (9)  and energetic during the day. If the 24 hour-cycle is  (10)  , most people experience unpleasant  (11)   . For example, people who are not  (12)   to working at night can find that  (13)   of sleep causes them to  (14)  badly at work.

  (15)   the daily cycle of sleeping and  (16)  , we also have other cycles which  (17)  longer than one day. Most of us would   (18)  that we feel good on some days and not so good on  (19)   ; sometimes our ideas seem to flow and at other times, they  (20)  ​do not exist.

       Those who doubt TV’s influence on our lives might consider the effect of automobile on American society. When the automobile first appeared on the highways, most Americans saw it as a horseless carriage, not as an important symbol of a new way of life. Similarly, those of us who grew up before television tend to think of it as just another medium in a series of 20th-century mass-communication systems, such as movies and radio. But television is not just another medium.

       If you were born before 1950, television came into your life after your formative years. Even if you are now a TV fan, it will be difficult for you to understand the changes it has brought. For example, imagine spending six hours a day at the local cinema when you were 12 years old. No parent would have allowed it. Yet, among the children we asked, nearly half the 12-year-olds watch an average of six or more hours of television per day. For many of them the habit continues into adulthood（成年）. From our surveys（调查）,we estimate（估计）that about one third of all American adults（成年人）watch an average of four more hours of television per day.

       None of us is totally dependent upon television for our view of the world. However, many of us have not had the opportunity to observe the reality of police station, courtrooms（法庭）, corporate board rooms（法人会议室）; or hospital operating rooms. Critics（评论家）complain about the stercotyped（不变的）characters and plots of TV dreams. But many viewers look on them as representative（代表）of the real world.

       If adults can so easily accept the reality of television, imagine: its effect on children. By the time the average American child reaches public school, he has already spent several years in an electronic nursery school. At the age of 10, the average child spend more hours a week in front of the TV screen than in the classroom. Given continuous exposure（暴露）to the world of TV, it’s not surprising that the children we tested seemed to be more strongly influenced by TV than the adults.

       At the other end of the life cycle, television becomes the steady and often the only companion of the elderly. As failing eyesight makes reading difficult, and getting around becomes it problem, many old people spend much of the day watching TV. Here the action of fictional drama helps make up for the inaction of their lives.

The sharing economy, represented by companies like Airbnb or Uber, is the latest fashion craze. But many supporters have overlooked the reality that this new business model is largely based on escaping regulations and breaking the law.

Airbnb is an internet-based service that allows people to rent out spare rooms to strangers for short stays. Uber is an internet taxi service that allows thousands of people to answer ride requests with their own cars. There are hundreds of other such services.

The good thing about the sharing economy is that it promotes the use of underused resources. Millions of people have houses or apartments with empty rooms, and Airbnb allows them to profit from these rooms while allowing guests a place to stay at prices that are often far less than those charged by hotels. Uber offers prices that are competitive with standard taxi prices and their drivers are often much quicker and more trustworthy.

But the downside of the sharing economy has gotten much less attention. Most cities and states both tax and regulate hotels, and the tourists who stay in hotels are usually an important source of tax income. But many of Airhnb’s customers are not paying the taxes required under the law.

Airbnb can also raise issues of safety for its customers and trouble for hosts' neighbors. Hotels are regularly inspected to ensure that they are not fire traps and that they don't form other risks for visitors. Airbnb hosts face no such inspections.

Since Airbnb is allowing people to escape taxes and regulations, the company is simply promoting thefts. Others in the economy will lose by bearing an additional tax burden or being forced to live next to an apartment unit with a never-ending series of noisy visitors.

The same story may apply with Uber. Uber is currently in disputes over whether its cars meet the safety and insurance requirements imposed on standard taxis. Also, if Uber and related services flood the market, they could harm all taxi drivers' ability to earn a minimum wage.

This downside of the sharing needs to be taken seriously, hut that doesn't mean the current tax and regulatory structure is perfect.

There are three kinds of goals：short-term，medium-range and long-term goals.Short-term goals are those that usually deal with current activities，which we can apply on a daily basis.Such goals can be achieved in a week or less，or two weeks，or possible months.It should be remembered that just as a building is no stronger than its foundation，our long-term goals cannot amount to very much without the achievement of solid short-term goals.Upon completing our short-term goals，we should date the occasion and then add new short-term goals that will build on those that have been completed.

The intermediate goals build on the foundation of the short-range goals.They might deal with just one term of school or the entire school year，or they could even extend for several years.Any time you move a step at a time，you should never allow yourself to become discouraged or overwhelmed.As you complete each step，you will enforce the belief in your ability to grow and succeed.And as your list of completion dates grow，your motivation and desire will increase.

Long-range goals may be related to our dreams of the future.They might cover five years or more.Life is not a static thing.We should never allow a long-term goal to limit us or our course of action.