The idea of a fish being able to generate electricity strong enough to light lamp bulbs--or even to run a small electric motor--is almost unbelievable, but several kinds of fish are able to do this. Even more strangely, this curious power has been acquired in different ways by fish belonging to very different families. Perhaps the best known are the electric rays, or torpedoes(电鳐), of which several kinds live in warm seas. They possess on each side of the head, behind the eyes, a large organ consisting of a number of hexagonal shaped cells rather like a honeycomb. The cells are filled with a jelly-like substance, and contain a series of flat electric plates. One side, the negative side, of each plate, is supplied with very fine nerves, connected with a main nerve coming from a special part of the brain. Current passes from the upper, positive side of the organ downwards, to the negative, lower side. Generally it is necessary to touch the fish in two places, completing the circuit, in order to receive a shock. The strength of this shock depends on the size of the fish, but newly born ones only about 5 centime-tres across can be made to light the bulb of a pocket flashlight for a few moments, while a fully grown torpedo gives a shock capable of knocking a man down, and, if suitable wires are connected, will operate a small electric motor for several minutes. Another famous example is the electric eel. This fish gives an even more powerful shock. The system is different from that of the torpedo in that the electric plates run longitudinally(纵向) and are supplied with nerves from the spinal(脊骨) cord. Consequently, the current passes along the fish from head to tail. The electric organs of these fish are really altered muscles and like all muscles are apt (likely) to tire, so they are not able to produce electricity for very long. The power of producing electricity may serve these fish both for defence and attack.It can be seen from the passage that（）.

第1题

The main idea of the third paragraph is that______.A．a mature torpedo is capable of produc

The main idea of the third paragraph is that______.

A．a mature torpedo is capable of producing enough electricity to knock down a man

B．the mass of the fish decides the intensity of electric power it generates

C．the strength of shock given by a young electric ray can only light the bulb of a pocket flashlight

D．to make full use of the energy produced by electric fish, suitable wires should be available

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第2题

The idea of a fish being able to generate electricity strong enough to light lamp bulbs--o

r even to run a small electric motor--is almost unbelievable, but several kinds of fish are able to do this. Even more strangely, this curious power has been acquired in different ways by fish belonging to very different families.

Perhaps the best known are the electric rays, or torpedoes (电鱼), of which several kinds live in warm seas. They posses on each side of the head, behind the eyes, a large organ consisting of a number of hexagon- al shaped cells rather like a honeycomb. The cells are filled with a jelly-like substance, and contain a series of flat electric plates. One side, the negative side, of each plate, is supplied with very fine nerves, connected with a main nerve coming from a special part of the brain. Current passes from the upper, positive side of the organ downwards to the negative, lower side. Generally it is necessary to touch the fish in two places, completing the circuit, in order to receive a shock.

The strength of this shock depends on the size of the fish, but newly born ones only about 5 centimeters across can be made to light the bulb of a pocket flashlight for a few moments, while a fully grown torpedo gives a shock capable of knocking a man down, and, if suitable wires are connected, will operate a small electric motor for several minutes.

Another famous example is the electric eel. This fish gives an even more powerful shock. The system is different from that of the torpedo in that the electric plates run longitudinally (纵向) and are supplied with nerves from the spinal(脊骨)cord. Consequently, the current passes along the fish from head to tail. The electric organs of these fish are really altered muscles and like all muscles are apt (likely) to tire, so they are not able to produce electricity for very long.

The power of producing electricity may serve these fish both for defence and attack.

It can be seen from the passage that ______. ()

A．the capacity to generate electricity is the distinctive characteristic of the fish

B．the current travels in an upward direction from the positive side to negative side in torpedo's electric cells

C．some fish can produce enough electricity to drive a number of electric motors

D．the torpedo's electric cells have a shape with six sides

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第3题

根据下列材料回答下列各题。 The idea of a fishBeing able to generate electricity strong e

nough to light lampBulbs—oreven to mn a small electric motoris almost unbelievable，but several kinds of fish are able todo this．Even more strangely。this curious power hasBeen acquired inDifferent waysBy fishBe。longing to veryDifferent families． Perhaps theBest known are the electric rays，or torpedoes(电鱼)，of which several kindslive in warm seas,They posses on each side of the head，behind the eyes，a large organ consis—ting of a number of hexagonal shaped cells rather like a honeycomb．The cells are filled with ajeUy—like substance，and contain a series of flat electric plates．One side，the negative side，ofeach plate．is supplied with very fine nerves，connected with a main nerve coming from a specialpart of theBrain．Current passes from the upper，positive side of the organDownwards to thenegative，lower side．Generally it is necessary to touch the fish in two places，completing the cir-cuit，in order to receive a shock． The strength of this shockDepends on the size of the fish，but newlyBorn ones only about5 centimeters across canBe made to light theBulb of a pocket flashlight for a few moments， while a fully grown torpedo gives a shock capable of knocking a manDown，and，if suitablewires are connected，will operate a small electric motor for several minutes． Another famous example is the electriceel．This fish gives an even more poweIful shock．The system i8Different from that of the torped。in that the electric plates run longitudinally(纵向)and ale supplied with nerves from the spinal(脊骨)cord．Consequefitly，the current passesalong the fish from head to tail．The electric or gans of these fish are really altered muscles andlike all muscles are apt(1ikely)to tire，so they are not able to produce electricity for very long．The power of producing electricity may serve these flshBom forDefence and attack．（）It canBe seen from the passage that__________．

A.the torpedo’s electric ceils have a shape with six sides

B.some fish can produce enough electricity toDrive a number of electric motors

C.the current travels in an upwardDirection from the positive side to negative sidein torpedo’s electric cells

D.the capacity to generate electricity is theDistinctive acteristic of the fish

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第4题

To swim across the English Channel takes at least nine hours. It' s a hard work and it mak

es you short of breath. To fly over the Channel takes only twenty minutes (as long as you' re not held up at the airport), but it' s an expensive way to travel. You can travel by hovercraft if you don' t mind the noise, and that takes forty minutes. Otherwise you can go by boat, if you forget your sea-sickness ills. All these means of transport have their problems and the weary(不耐烦的) traveler often dreams of being able to drive to France in his own car. "Not possible", you say. Well, wait a minute. People are once again considering the idea of a Channel tunnel or bridge.

This time, the Greater London Council is looking into the possibility of building a Channel link straight to London. (79) A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would provide a rail link only.

Why is this idea being discussed again？ Is Britain becoming more conscious of the need for links with Europe as a result of joining the EEC(欧共体) ？ Well, perhaps. The main reason, though, is that a tunnel or bridge would reach the twenty square kilometers of London' s disused dockland(船坞地). A link from London to the continent would stimulate trade and re-vitalize(使…各新有活力) the port, and would make London a main trading center in Europe. (80)With a link over the Channel, you could buy your fish and chips in England, and be able to eat them in France while they were still warm!

Which of the following statements is TRUE？

A．Swimming across the Channel takes less than four hours.

B．The idea of a Channel tunnel or bridge is a very new one.

C．It is considered to be more difficult to swim across the channel than any other means.

D．A tunnel or bridge would only reach as far as the coast.

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第5题

We have no idea about when men first began to use salt, but we do know that it has been us

ed in many different ways throughout the history.

For example, it is recorded in many history books the people who lived over three thousand years ago ate salted fish. Thousands of years ago in Egypt, salt was used to preserve the dead.

In some periods of history, a person who stole salt was thought to have broken the law. Take the eighteenth century for an example, if a person was caught stealing salt, he would be thrown into prison. History also records that only in England about ten thousand people were put into prison during that century for stealing salt! About one hundred and fifty years ago, in the year 1553, if a man took more than his share of salt, he would be thought to have broken the law and would be seriously punished. The offender' s ear was cut off.

Salt was an important item on the dinner table of a king. It was always placed in front of the king when he sat down to eat. Important guests at the king' s table were seated near the salt. Less important guests were given seats farther away from it.

Thousands of years ago in Egypt, salt was used ______.

A．to punish people who had broken the law

B．to keep dead bodies from decay

C．to keep fish alive

D．to make chemicals

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第6题

We have no idea as to when men began to use salt, but we do know that it has been used m m

any different ways throughout the history.

For example, it is recorded in many history books that people who lived over 3000 years ago ate salted fish. Thousands of years ago in Egypt, salt was used to preserve the dead.

In some periods of history, a person who stole salt was thought to have broken the law. Take the eighteenth century for example, if a person was caught stealing salt, he would be thrown into prison. History also records that only in England about ten thousand people were put into prison during that century for stealing salt! About 450 years ago, in the year 1553, if a man took more than his share of salt, he would be thought to have broken the law and would be seriously punished. The offender's ear was cut off.

Salt was an important item on the dinner table of a king. It was always put in front of the king when he sat down to eat. Important guests at the king's table were seated near the salt. Less important guests were given seats farther away from it.

Thousands of years ago in Egypt salt was used ______.

A．to punish people who had broken the law

B．to keep dead bodies from decay

C．to keep fish alive

D．to make chemicals

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第7题

"In every known human society the male's needs for achievement can be recognized... In a g

reat number if human societies men's sureness of their sex role is tied up with their right, or ability, to practice some activity that women are not allowed to practice. Their maleness in fact has to be underwritten by preventing women from entering some field or performing some feat."

This is the conclusion of the anthropologist Margaret Mead about the way in which the roles of men and women in society should be distinguished.

If talk and print are considered it would seem that the formal emancipation of women is far from complete. There is a flow of publications about the continuing domestic bondage of women and about the complicated system of defences which men have thrown up around their hitherto accepted advantages, taking sometimes the obvious form. of exclusion form. types of occupation and sociable groupings; and sometimes the more subtle form. of automatic doubt of the seriousness of women's pretensions to the level of intellect and resolution that men, it is supposed, bring to the business of running the world.

There are a good many objective pieces of evidence for the erosion of men's status. In the first place, there is the widespread postwar phenomenon of the women Prime Minister, in India, Sri Lanka and Israel.

Secondly, there is the very large increase in the number of women who work, especially married women and mothers of children. More diffusely there ate the increasingly numerous convergences between male and female behaviour: the approximation to identical styles in dress and coiffure, the sharing if domestic tasks, and the admission of women to all sorts of hitherto exclusively male leisure-time activities.

Everyone carries round with him a fairly definite idea of the primitive or natural conditions of human life. It is acquired more by the study of humorous cartoons than of archaeology, but that does not matter since it is not significant as theory but only as an expression of inwardly felt expectations of people's sense of what is fundamentally proper in the differentiation between the roles of the two sexes. In this rudimentary natural society men go out to hunt and fish and to fight off the tribe next door while women keep the fire going. Amorous initiative is firmly reserved to the man, who sets about courtship with a club.

The phrase "men's sureness of their sex role" in the second line, first paragraph suggests that they ______.

A．are confident in their ability to charm women

B．take the initiative in courtship

C．have a clear idea of what is considered "manly"

D．tend to be more immoral than women are

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第8题

The garbage does not simply disappear.It may go on to a transfer station.Since it is

difficult and expensive to dispose at landfill sites and incinerators .People are encouraged to recycle and compost (堆肥) picked up and taken and will be carefully buried or burned.The problem with these methods othey cost money, take up land and cause pollution.

One solution to the problem of solid waste disposal is composting.Some things that can beand vegetable peels.People can compost these food products by placing them in an outdoor decompose(分解 ) into a substance called compost.Compost, which contains plant nutrients, cto help other plants grow.

Another solution to the problem of solid waste disposal is recycling.Some things can be recycled, such as glass newspapers.People can recycle used products by putting them in the "blue box".The recycled goods are melt doRecycling and composting are two ways of reducing the amount of solid waste.These methods show people a nmany things people throw away can be used again .

1.Which of the following situation will be after the new ways to deal with garbage is used？ ()

A、more solid waste will be produced

B、less solid waste will be produced

C、The same amount of solid waste will be produced

D、people will stop producing solid wast

2.The passage encourages people to ()their solid waste

A、ncrease

B、burn

C、hide

D、recycle or compost

3.The main idea for the second paragraph is

A、compost is a special substance that provides your garden with nutrients

B、composting is one of ways to reduce solid waste

C、it can take a long time for compost to z, depending on what you put in the compost bi

D、meat, fish and grease are three things that you cannot put in your compost

4.The passage is mainly concerned with ().

A.Explain how to make compost and how it can benefit your garden.

B.Choose the best way to reduce solid waste: composting or recycling.

C、Compare and contrast composting with traditional garbage disposal.

D、Classify the different methods of throwing away household garbage

5.Which place is not a destination for solid waste？

A、a transfer station

B、a landfill site

C、a recycling depot

D、an incinerator

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第9题

Can a fish swim（）

A.Yes, it can

B.No, it can't

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第10题

你想说“它是一条红色的鱼。”，你应该说：__（）

A.It’s a pink fish

B.It’s a red fish

C.It’s a fish

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第11题

Everyone knows that the favorite food in the United States is the hamburger. It seems impo

ssible, but people eat 34 billion hamburgers a year. This is enough to make a line of hamburgers around the world four times.

The favorite place to buy hamburgers is a fast-food restaurant. In these restaurants, people order their food, wait just a few minutes, and carry it to their tables themselves. They can eat it in the restaurant or take the food out and eat it at home, at work, or in a park. At some restaurants people can drive up beside a window. They order the food, and a worker hands it to them through the window. Then they eat in their cars.

Hamburgers are not the only kind of food that fast-food restaurants serve. Some serve fish, chicken, beef sandwiches, or Mexican food. They also serve fries, shakes (a drink made from milk and ice cream) , soft drinks and coffee.

Fast-food restaurants are very popular because the service is fast and the food is inexpensive. For many people, this is more important than quality of the food. These restaurants are also popular because the food is always the same. People have known that if they eat at a company' s restaurant in the north or south of the city, the food will be the same.

In a fast-food restaurant, people______.

A．stand up to eat

B．are served at table

C．eat in a hurry

D．serve themselves

The fast-food is convenient owing to the following factors except______.

A．it doesn't take you much time to have a meal

B．you can get a lot of salt and fat in your fast-food

C．you can take your order without leaving your car

D．you can take the food to anywhere you like

Fast-food restaurants are popular because______.

A．people are free to order their food

B．the quality of the food is good

C．it is cheaper and faster to have meals there

D．people can find fast-food restaurants everywhere

Which of the following sentences is not correct？

A．The service is fast and the food is cheap in fast-food restaurant.

B．Everyone likes eating fast food.

C．People can find the same food in all the restaurants.

D．People can take fast food out.

What" s the main idea of the passage？

A．Americans eat enough hamburgers to make a line around the world four times.

B．Fast-food restaurants are popular in the United States.

C．Some people can eat fast food in parks.

D．Mothers who work outside home often have meals in fast-food restaurants.

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