20. Different from Chinese atmosphere, western people eat quietly. When the hostess opens the napkin the dinner starts.

When does the shop open on Fridays?

A．From 8:30 am to 4: 30 pm.

B．From 8:30 am to 5: 30 pm.

C．From 8:30 am to 8:00 pm.

D．From 9:30 am to 4:30 pm.

When has the heart-open surgery been possible?

A．Only in the last fifty years.

B．From prehistoric times.

C．Since the nineteenth century.

D．Since the invention of valves.

根据以下资料，回答17~20题。 A hundred years ago, the game we now call football did not exist．American football started during a game between two colleges．The teams had got together to play what they called "football", but each team played by different rules．One team played what we now call soccer．The other played what we now call rugby (橄榄球) . Both games had been invented a thousand years before．In the first kind of football game ever played, all the men from one village tried to kick a ball into another village．The men of the second village tried to kick the ball into the first．Hundreds of people joined in, running everywhere, running crops and knocking down fences．In time, people agreed on some rules to keep order, but many rules were left open to change．Different rules developed in different places. When the two colleges met to play football, each followed its own rules．They mixed the games together and invented a new game．A hundred years 1.ater we call that game American football. In what ways do you suppose the game we know now will have changed in another hundred years? When the two colleges first met to play "football", the players followed __. A．the rules of soccer B．the rules of rugby C．different rules D．college rules

When the dog opened his mouth, the bone fell into the water, and the dog in the water took it and ran away quickly.

A．真

B．False

When the sun is up in Amsterdam, the largest city in the Netherlands sits quietly on the Amstel River. You can rent a bicycle, visit the Van Gogh or Anne Frank museum, or take a water taxi.

But when the sun goes down, the partying begins. In the big clubs and in coffee shops, tourists gather to hang out, talk politics and smoke.

Several areas of the city clearly show the two worlds that rule Amsterdam. And they're all within a short cab ride of each other.

For example, Dam Square attracts daytime sightseers to its festivals, open markets, concerts and other events. Several beautiful and very popular hotels can be found there. And there is the Royal Palace and the Magua Plaza shopping mall.

But as evening descends on Dam Square so do the party-seekers. Hip pop or funk music begins blaring from Club Paradiso and Club Melkweg. These are two of the most popular clubs in Europe. So if you come, be ready to dance. The clubs don't shut down until 4 am.

And while you are there, check out the various inexpensive ways to tour the city. Don't worry about getting lost. Although Dutch is the official language, most people in Amsterdam speak English and are happy to help you with directions.

And you'll notice that half the people in the streets are on bicycles. They rent for US ＄ 17 to ＄ 20 for a whole day.

Amsterdam also has a good canal system. From anywhere between US ＄ 2 and ＄ 9.50, you can use the canal bus or a water taxi to cruise the "Venice of the North".

You can take in the picturesque canal house architecture: The rows of neat, narrow four-story dwellings of brownstone with large windows are well worth seeing. Many of them are several centuries old.

You might also want to jump out of the canal bus at the Museum Quarter and start walking. Masterpieces by Dutch artists such as Rembrandt, Bruegel, Van Gogh and others are on display at the Van Gogh Museum, Rembrandt House and others.

The city has an appreciation of its historic past. One place to visit is the Anne Frank House in Nine Streets. It was there that the young Jewish girl wrote her famous diary during World War Ⅱ. Visitors can view Anne's original diary and climb behind the bookcase to the room where she and her family hid from the Nazis for two years.

At the beginning of the passage, the author indicates that _____ .

A．Amsterdam is generally known as a quiet city

B．parties go on all day long in Amsterdam

C．Amsterdam presents two different pictures

D．Amsterdam attracts many daytime visitors

When the sun is up in Amsterdam, the largest city in the Netherlands sits quietly on the Amstel River. You can rent a bicycle, visit the Van Gogh or Anne Frank museum, or take a water taxi.

But when the sun goes down, the partying begins. In the big clubs and in coffee shops, tourists gather to hang out, talk politics and smoke.

Several areas of the city clearly show the two worlds that rule Amsterdam. And they're all within a short cab ride of each other.

For example, Dam Square attracts daytime sightseers to its festivals, open markets, concerts and other events. Several beautiful and very popular hotels can be found there. And there is the Royal Palace and the Magua Plaza shopping mall.

But as evening descends on Dam Square so do the party-seekers. Hip pop or funk music begins blaring from Club Paradiso and Club Melkweg. These are two of the most popular clubs in Europe. So if you come, be ready to dance. The clubs don't shut down until 4 am.

And while you are there, check out the various inexpensive ways to tour the city. Don't worry about getting lost. Although Dutch is the official language, most people in Amsterdam speak English and are happy to help you with directions.

And you'll notice that half the people in the streets are on bicycles. They rent for US ＄ 17 to ＄ 20 for a whole day.

Amsterdam also has a good canal system. From anywhere between US ＄ 2 and ＄ 9.50, you can use the canal bus or a water taxi to cruise the "Venice of the North".

You can take in the picturesque canal house architecture: The rows of neat, narrow four-story dwellings of brownstone with large windows are well worth seeing. Many of them are several centuries old.

You might also want to jump out of the canal bus at the Museum Quarter and start walking. Masterpieces by Dutch artists such as Rembrandt, Bruegel, Van Gogh and others are on display at the Van Gogh Museum, Rembrandt House and others.

The city has an appreciation of its historic past. One place to visit is the Anne Frank House in Nine Streets. It was there that the young Jewish girl wrote her famous diary during World War Ⅱ. Visitors can view Anne's original diary and climb behind the bookcase to the room where she and her family hid from the Nazis for two years.

At the beginning of the passage, the author indicates that _____ .

A．Amsterdam is generally known as a quiet city

B．parties go on all day long in Amsterdam

C．Amsterdam presents two different pictures

D．Amsterdam attracts many daytime visitors