Now, we know that if we do not get enough vitamins, we are at risk of developing a number of diseases. As a result, vitamin supplements.though expensive, are popular with people who worry that they ar 题目和参考答案——青夏教育精英家教网—

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Now, we know that if we do not get enough vitamins, we are at risk of developing a number of diseases. As a result, vitamin supplements（补品），though expensive, are popular with people who worry that they are not getting enough vitamins from the foods they eat. But contrary to what many people think, medical experts have found little evidence that most supplements do anything to improve health or protect against disease.
In fact, medical experts warn that taking too many of some vitamins can be harmful. For example, too much vitamin E can cause bleeding. People should discuss what vitamins they take with their doctors, as some vitamins can produce harmful side effects when mixed with medicines.
Experts, however, do say that sometimes vitamins can help prevent disease. People who know they lack a particular vitamin should take vitamin supplements. Some older adults, for example, may not have enough vitamin B-twelve. This is because, as people get older, their body loses its ability to take it from foods. Also, people who spend much time inside may need some extra vitamin D as the skin makes this vitamin from sunlight.
Different vitamins are found in different foods. Vitamin A is found in fish liver oil. It also is in the yellow part of eggs. Sweet potatoes, carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A. Vitamin B-twelve is found in green leafy vegetables and other foods, like fruits. Vitamin K can be found in pork products.
In fact, for most people, a balanced diet can ensure enough of the vitamins our bodies need. So, it is important for us to eat a mixture of foods every day to ensure that we get enough vitamins our bodies need.
【小题1】Vitamin supplements are popular with people because ________.

A．people mistakenly think that they are good for their health

B．they contain more vitamins than the foods people eat

C．food does not provide enough vitamins people need

D．people fear that a lack of vitamins will lead to disease

【小题2】From the passage, we can learn that medical experts advise people _________.

A．never to take any vitamin supplements

B．to depend only on food for their vitamins

C．not to take any vitamins together with medicines

D．to consult doctors before taking vitamin supplements

【小题3】For people who lack Vitamin B-twelve, they can eat more from _______.
A. sweet potatoes B. pork products C. green leafy vegetables D. eggs
42. What would be the best title of the passage?
A. Getting enough vitamins through a balanced diet.
B. Vitamin supplements do harm to our health.
C. Vitamins are important to our health.
D. Lacking vitamins can cause many diseases.

【小题1】D
【小题2】D
【小题3】C
【小题4】A

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Birthdays often bring surprises. But this year’s surprise on the birthday of the great British playwright William Shakespeare is __21__ one of the most surprising.

On April 22, one day before his 441^st birthday anniversary, experts __22__ that one of the most recognizable __23__ of William Shakespeare is a fake (赝品).

This __24__ that we no longer have a good __25__ of what Shakespeare looked like. “It’s very possible that many pictures of Shakespeare are unreliable because many of them are __26__ of this one,” said an expert from Britain’s National Portrait Gallery.

The _27_ comes after four months of testing. Experts from the gallery say the image — commonly known as the “Flower portrait” — was actually __28__ in the 1800s, two centuries __29_ Shakespeare’s death.

The art experts who work at the gallery say they used modern chemistry technology to __30__ the paint on the picture. These checks found traces (痕迹) of paint deep in the picture __31__ about 1814.

Shakespeare __32__ in 1616, and the date that appears on the portrait is 1609.

“We now think the portrait dates back to around 1818 to 1840. This was __33__ there was a new interest in Shakespeare’s__ 34__ ,” Tanya Cooper, the gallery’s 16^th century curator (馆长) said.

The __35__ picture has often been used as a cover for __36__ of his plays. It is called the “Flower portrait” because one of its __37__, Desmond Flower, gave it to the Royal Shakespeare Company.

“There have always been __38__ about the authenticity (真实性) of the painting,” said David Howells, curator for the Royal Shakespeare Company.

“Now we know the truth, we can put the image in its proper place in the history of Shakespearean portraiture (画像技法),” he said.

Two other images of Shakespeare are also being studied as part of the investigation and the results will __39__later in May. But for now what Shakespeare really looked like will remain a __40__.

A. surely B. never C. hardly D. only

A. wondered B. doubted C. found D. considered

A. plays B. masterpiecesC. portraits D. photos

A. recommends B. advises C. decides D. means

A. news B. idea C. design D. expression

A. bargains B. productions C. copies D. prints

A. justice B. discovery C. invention D. deed

A. cloned B. developed C. painted D. copied

A. after B. before C. since D. until

A. try B. remove C. wash D. check

A. looking back B. dating from C. getting along D. starting with

A. died B. was born C. succeeded D. was buried

A. why B. when C. how D. what

A. stories B. pictures C. plays D. photos

A. real B. original C. valuable D. fake

A. requirements B. collections C. consequences D. playwrights

A. owners B. painters C. writers D. readers

A. causes B. problems C. questions D. orders

A. go about B. come out C. turn up D. break out

A. surprise B. problem C. secret D. mystery

Birthdays often bring surprises. But this year’s surprise on the birthday of the great British playwright William Shakespeare is __21__ one of the most surprising.
On April 22, one day before his 441^st birthday anniversary, experts __22__ that one of the most recognizable __23__ of William Shakespeare is a fake (赝品).
This __24__ that we no longer have a good __25__ of what Shakespeare looked like. “It’s very possible that many pictures of Shakespeare are unreliable because many of them are __26__ of this one,” said an expert from Britain’s National Portrait Gallery.
The _27_ comes after four months of testing. Experts from the gallery say the image — commonly known as the “Flower portrait” — was actually __28__ in the 1800s, two centuries __29_ Shakespeare’s death.
The art experts who work at the gallery say they used modern chemistry technology to __30__ the paint on the picture. These checks found traces (痕迹) of paint deep in the picture __31__ about 1814.
Shakespeare __32__ in 1616, and the date that appears on the portrait is 1609.
“We now think the portrait dates back to around 1818 to 1840. This was __33__ there was a new interest in Shakespeare’s__ 34__ ,” Tanya Cooper, the gallery’s 16^th century curator (馆长) said.
The __35__ picture has often been used as a cover for __36__ of his plays. It is called the “Flower portrait” because one of its __37__, Desmond Flower, gave it to the Royal Shakespeare Company.
“There have always been __38__ about the authenticity (真实性) of the painting,” said David Howells, curator for the Royal Shakespeare Company.
“Now we know the truth, we can put the image in its proper place in the history of Shakespearean portraiture (画像技法),” he said.
Two other images of Shakespeare are also being studied as part of the investigation and the results will __39__later in May. But for now what Shakespeare really looked like will remain a __40__.

We can’t live without food. Today our knowledge of food and what it does for our bodies is far more advanced than____1_____of the old times. Now we know____2___vitamins and how each kind of vitamins__3_____in the growth of a special part of our body._____4____ on the market all kinds of vitamins which we can take to______5____our lack of certain important things which are needed for good health.____6____ if we eat well and properly, the food that we eat will ___7____ our bodies and so there is no____8_____to take any kind of vitamins ____9____ our doctors tell us that our bodies are_____10____of something which can be supplied by it. Generally speaking, everything we eat ____11____ some good to our bodies, but if we eat ____12____ of one kind of food and pay______13____attention to others, we may have too much of one kind and not____14____ of others. Then we may be ____15___ trouble. We are often told___16_____ we must eat some meat every day in order to get the necessary proteins. That is only____17____true, for proteins are not found only in meat. We can also get them___18____some vegetables. The best advice about ____19___ to eat is that we should eat all kinds of food____20__ never too much of one kind.

Agence Rrance-Presse--- French doctors this week carried out the world’s first operation on a human in zero gravity, using a specially adapted aircraft to create conditions in space.
During a three-hour flight from Bordeaux in southwest France, the team of surgeons and anesthetists (麻醉师) successfully removed a benign tumor (良性瘤) from the forearm of a 46-year-old volunteer. The experiment was part of a program backed by the European Space Agency to develop techniques for performing robotic surgery aboard the International Space Station or at a future Moon base.
“Now we know that a human being can be operated on in space without too many difficulties,” says the team leader Dr. Dominique Martin.
Under normal ground conditions, the operation would be performed under a local anesthetic. Without gravity, the surgeon’s work is harder and the patient’s body reacts differently. Blood doesn’t pump in the same way.
The custom-designed Airbus 300 aircraft performed a series of parabolic swoops (抛物线飞行), each creating between 20 seconds of weightlessness. The process was repeated 32 times.
Fixed inside a custom-made operating block, three surgeons and two anesthetists worked during these periods, with their instruments held in place with magnets around the patient’s bed. The next part of the program is to carry out a remote-controlled operation using a robot controlled from the ground by satellite. This experiment should take place within a year, Martin says.
Anesthetist Dr. Laurent de Coninek says that zero-gravity surgery offers huge promise for space exploration, although it would at first be limited to treating simple injuries. Today more than 400 people have already traveled into space. The chances of injuries occurring during missions will become even greater and to bring a wounded person back to the earth for treatment is both risky for them and expensive.
67. What would be the best title for the test?
A. A Special Operation for Doctors            B. First Operation on the Moon
C. World’s First Operation in Zero Gravity      D. An Important Experiment for Doctors
68. What’s the purpose of the operation?
A. To have an experiment on space operation.    B. To cure the patient.
C. To do it at the request of the patient.               D. To reduce the danger of operation on earth.
69. It is difficult for doctors to do operations in space because________________.
A. the patient’s illness will be more serious           B. the patient has no feeling about pain
C. the patient’s body reacts differently               D. the patient’s flood will stop flowing
70. The last paragraph mainly wants to tell readers________________.
A. there are many people injured in space           B. it is necessary to do the experiment
C. it is risky to travel in space                             D. there is no need to bring patients in space to the earth

We need to make better use of our resources. In developing countries we have more than enough, if we are less wasteful in our ways. Fortunately, we can improve. The challenge lies not so much with ‘technical fixes’ but with our approach to our world around us. In the recent past we were in a “Wild West” economy, supposing that there would always be enough resources. Now we know there are no new Earth to explore and exploit; one image to illustrate this is to think of Earth as a spaceship, where most materials have to be recycled. For us, “moving on” will be a case of leaving behind the throwaway society and advancing to a conserver society.

To qualify as citizens of a conserver society, we must change traditional attitudes and thinking. We need to recognize that there is not very often such a thing as “waste”, rather, there are materials which sometimes end up in the wrong place. The change has already begun. The European steel industry reuses scrap（废弃的）metal, resulting in an energy saving of up to 50% . Recycling a glass container saves only 18%; but, in parts of the United States, a citizen buying a bottle of soda or beer now pays a deposit against return of the empty bottle.

If all drink containers in the USA were to be reused, the annual saving would be 0.5 million tons glass, plus about 50 million barrels of oil used in production processes. In Japan, OPEC promoted an increase in recycling of raw materials from 16% to 48% in just five years. In Norway, the price of a new car includes a disposal cost element of about 100 dollars, redeemable（可换成现款的）when the junked car is turned in at an approved receiving center.

Major new businesses are trying to exploit waste chemicals and oil. The Chinese claim to reuse 2.5 million tons of scrap iron and at least one million tons of waste paper each year. In the main, the conserver society depends on the commitment of individuals. But they can be encouraged by government incentive(鼓励) and punishment, which should apply at least as strongly to industry and other commercial interests.

73 Which of the following best expresses the meaning of “a conserver society” in the second paragraph?

A. A wasteful society.

B. A society which thinks of ways of recycling waste materials.

C. A society which keeps everything.

D. A society which saves electricity.

74 In the last paragraph, the author suggests governments _______.

A. depends on individuals to find ways of conserving energy.

B. find ways of encouraging those industries and individuals who conserve energy and of punishing those who don’t.

C. depend on companies to find ways of saving energy and rewarding workers

D. help establish businesses that will exploit waste materials

75 In this passage the author _______.

A. explains that meaning of the “Wild West” economy

B. tells us what recycled materials are.

C. teaches us how to recycle materials.

D. recommend a change in our use of resources strongly

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