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阅读材料，回答题： Do bring about greater competitionAbout eight million school-age childr

阅读材料，回答题：

Do bring about greater competition

About eight million school-age children are home alone after school. These are the hourswhen the number of violent crimes peaks and when youths are most likely to experiment with alco-hol, tobacco, and drugs. Many older children take care of themselves after school for an hour or twountil aparent comes home, and research suggests that some of these children are more at risk ofpoor grades and risky behaviors.

Studies have been done to find out what helps to reduce these kinds of risky behaviors amongyouths. One study of Chicago neighborhoods showed that after-school programs resulted in less vio-lence even in poor neighB．orhoods.

After-school programs can help to reduce crime and violence because they offer activities tochildren and youths during their out-of-school time. In addition to helping youths make use of af-ter-school hours, after-school programs provide teens with opportunities to develop caring relation-ships with adults. Studies have found that high-quality relationships with parents and other adults,as well as good use of time, are very important for healthy development in youth.

After-school programs can also be used for teens who hang out at friends&39; houses and playb．asketd．all when a parent or other responsible adult is at home. The programs can also be helpfulfor formal after-school activities, including" drop-in" programs that are provided B．y organizations.Despite the benefits of after-school programs, there are many reasons why some parents do notuse them. Programs may be too expensive, of poor quality, or hard to join. Some older children andyoung teens may refuse to attend programs that seem like they are just child care. Parents may feeluncertain about how much freedom is proper for children and youths who are beyond the tradition-al child care years. However, research supports the effectiveness of these programs in protectingmiddle school and high school youths from risk and harm.

Which of the following is abenefit of after-school programs？ 查看材料

A.They help to avoid crime and violence during that time

B.They help youths do things on their own during after-school hours

C.They help teens develop caring relationships with classmates

D.They help to reduce risky behaviors among youths

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发布时间：2021-05-10
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更多“阅读材料，回答题： Do bring about greater competitionAbout eight million school-age childr”相关的问题

第1题

阅读材料，回答题。 NanotechnologyMany of the grand challenges of today and the future are

阅读材料，回答题。

Nanotechnology

Many of the grand challenges of today and the future are found in the question: "How are we going to solve the problems and make serious improvements in industrial manufacturing, disease control, environmental pollution control, global climate change, food production, transportation, communication, and others？"

Nanotechnology (纳米技术 ) promises to make revolutionary contributions.Within the next few years we can expect to see major improvements. Here are some possibilities the things to come.Nanotechnology is fundamentally changing the way materials and devices will be produced in the future.

Nanostructures, ceramics, polymers, metals, and other materials will have greatly improved mechanical properties.In fact, with the ability to build things atom-by-atom and molecule-by-molecule there will be new classes of structural materials.Nanotechnology will enable products to be lighter, stronger, smarter, cheaper,cleaner, and more precise.

The ability to synthesize nanoscale budding blocks with precisely controlled size and composition and then to assemble them into larger structures with unique properties and functions will revolutionize segments of the materials manufacturing industry. Nanotechnology is expected to bring about lighter, stronger, and programmable materials ; reductions in life-cycle costs through lower failure rates; innovative devices based on new principles and architectures ; and use of molecular cluster manufacturing.

Nanotechnology will provide new tools for medicine.It could radically change the way surgery is done.It will make it possible to do molecular scale surgery to repair and rearrange cells.Since disease is the result of physical disorder, misarranged molecules and cells, medicine at this level should be able to cure most diseases.

Mutations in DNA could be repaired and cancer cells, toxic chemicals, and viruses could be destroyed through use of medical Nan devices.

Nanotechnology enabled increases in computational power will permit the characterization of macromolecular networks in realistic environments.Such simulations will be essential elements in the development of biocompatible implants and in the drug discovery process. Nanotechnology has the potential to significantly impact energy efficiency, storage, and production, Nanotechnology can change the economics of energy production.

The passage deals mainly with__________. 查看材料

A.grand challenge in manufacturing， medicine and computer industry

B.possibilities of nanotechnology"s contributions in the future

C.great changes caused by nanotechnology

D.practical application of nanotechnology

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第2题

阅读材料，回答题： Exercising Your Memory1 Aging does not mean a dramatic decline in memor

阅读材料，回答题：

Exercising Your Memory

1 Aging does not mean a dramatic decline in memory power, unless you help it happen by let-ting your mind go.

2 That&39;s not to say that memory doesn&39;t change throughout life. Researchers divide memory intocategories based on the length of time when memories are stored. One system divides it up asshort-term (less than one minute; remembering a telephone number while you dial, for in-stance), long-term (over a period of years) and very long-term memory (over a lifetime).

3 Short-term memory isn&39;t mastered until about age 7, but after that you never lose it. Long-ternmemory, however, involves more effort and skill and changes more through life. It&39;s not until thearly teens (十几岁) that most people develop a mature long-term memory.

4 First, we must get information into our heads through learning. Learning strategies can gerusty (生锈) without constant use. High school and college students, who are forced to repeated-ly exercise their long-term memory abilities (at least long enough to get them through a final ex-

am), usually do well on memory tests. The longer you stay in school, the more ehanee you get tcpolish your learning skills. It&39;s no wonder that more highly educated people have more effectivememory skills throughout life.

5 Although older people in general learn somewhat more slowly than they did when younger, adramatic difference exists between those who stay intellectually active reading, discussing, tak-ing classes, thinking--and those who do not. Giving the brain daily workout (锻炼) is just asimportant as exercising your muscles. Brainwork keeps your learning strategies in shape, and this

helps your memory to function at full capacity.

6 The next part of a healthy long-term memory is retention (记忆力), the ability to store whatyou have learned. Memory researchers still do not know whether memories are lost--whether theystill exist in the brain but our mental searching cannot turn them up, or have disappeared entirely

as our brain ages.

7 The third necessity for memory is recall, the ability to bring to mind the memories we havestored. Again, while aging has widely different effects on the recall abilities of different people,research indicates that the older we get, the longer it takes to recall facts. But slower recall is still

recall. In fact, aging does not seem to have any effect on forgetting at all, which takes place atthe same rate in younger and older people.

Paragraph 3

阅读材料，回答题： Exercising Your Memory1 Aging does not m

查看材料

A.A

B.B

C.C

D.D

E.E

F.F

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第3题

阅读材料，回答题。 Government Policies and EconomyWhile he was off on his l978 tour，Americ

阅读材料，回答题。

Government Policies and Economy

While he was off on his l978 tour，Americans were becoming disgusted with their lot as all“emerging second—class nation”，Wilson says．They began to see that incentives had to be restored to the economy．For instance，the capital gains tax was cut，an extraordinary turn—about．If it had been predicted before he went away in May，he would have said it was simply inconceivable as inconceivable as the prospect of Resorts going up1，000 percent．

This momentous transformation in the U．S．should soon bring about a huge bull market． In the l940s and l950s，the last time price earning multiples were at these low levels，the investing public expected that there would be another great postwar depression．Instead，aRer the beginning of l953 it became apparent that there would not be one，and price-earnings multiples got so low this time that investors felt that the country was drifting into socialism．That drift，however，may be reversing direction．

Wilson believes that the bankruptcy of New York City means the discrediting of big government，that as a result there will be less government，and that things in general will go much better．From l980’s depressed levels the market could rise to twenty times doubled earnings or almost fivefold in five to seven years．Wilson believes that he’ll be worth hundreds of millions of dollars before it’s over．

From paragraph l，we can infer that Resorts is__________． 查看材料

A.a company that involves many capital gains

B.a company that has little hope of rapid growth

C.a company that benefited from capital gains tax

D.a company that stimulates the economy

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第4题

阅读材料，回答题。Man cannot go on increasing his number at the present rate. In the next 30

阅读材料，回答题。

Man cannot go on increasing his number at the present rate. In the next 30 years man will faca period of crisis. Some experts believe that there will be a widespread food___ 51 ____. Other experthink this is too pessimistic (悲观的), and that man can prevent things from___ 52 ____worse tha they are now. But remember that two thirds of the people in the world are under-nourished or stmving now.

One thing that man can do is to limit the___ 53 ____of babies born. The need for this is obvious but it is not easy to achieve. People have to be___ 54 ____to limit their families. In the countries of the population___ 55 ____, many people like big families. The parents think that this makes a bigger income for the family and ensures there will be someone in the family who will look___ 56 ____them in old age.

Several governments have___ 57 ____birth control policies in recent years. Among them are Japan, China, India and Egypt. In some cases the results have not been successful. Japan has been an___ 58____The Japanese adopted a birth control policy in 1921~3. People were___ 59 ____to limit their families. The birth rate fell from 34.3 per thousand per year to about 17.0 per year___ 60 ____ present.

________ 查看材料

A.Need

B.want

C.Absence

D.shortage

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第5题

阅读材料，回答题。 BreakfastStudies show that children who eat breakfast do better in sch

阅读材料，回答题。

Breakfast

Studies show that children who eat breakfast do better in school. It doesn&39;t take much further thought to believe that adults will feel better and perform. better at work as well .Whether you work at home, on the farm, at the office, at school, or on the road, it is not a good idea to skip (故意略去 ) breakfast.

If we don&39;t eat breakfast, we are likely to become tired when our brains and bodies run low on fuel. By mid-morning, a lot of us grab a cup of coffee, or wolf down a sugary candy bar to wake up again. This might work for a few minutes, but by lunchtime we are hungry, bad-tempered, and perhaps our mood might make us a little more likely to make unhealthy choices at lunch. Eating a good breakfast sets the tone for the rest of the day.

People who eat breakfast are generally more likely to maintain a healthy weight. Many people believe that they will lose weight if they skip meals, but that isn&39;t a good idea. The body expects to be refueled a few times a day, so start with a healthy breakfast.

A healthy breakfast should contain some protein (蛋白质) and some fiber (纤维) . Protein can come from meat, eggs, beans, or soy (大豆) . Fiber can be found in whole cereals (谷物), grains or in fruits.A good example of a healthy breakfast might be something simple like a hard boiled egg, an orange, and a bowl of whole grain cereal with soy milk.

Adults who eat breakfast will perform. better at work. 查看材料

A.Right

B.Wrong

C.Not mentioned

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第6题

阅读材料，回答题。Step Back in Time Do you know that we live a lot longer now than the peopl

阅读材料，回答题。

Step Back in Time

Do you know that we live a lot longer now than the people who were born before us？ One hundred years ago the average woman lived to be 45. But now， she can live until at least 80.

One of the main reasons for people living longer is that we know how to look after ourselves better. We know which foods are good for us and what we have to eat to make sure our bodies get all the healthy things they need.We know why we sometimes get ill and what to do to get better again. And we know how important it is to do lots of exercise to keep our hearts beating healthily.

But in order that we don"t slip back into bad habits， let"s have a look at what life was like 100 years ago.

Families had between 15 and 20 children， although many babies didn"t live long.Children suffered from lots of diseases， especially tickets （佝偻病 ） and scurvy （坏血病） ， which are both caused by bad diets. This is because many families were very poor and not able to feed their children well.

Really poor families who lived in crowded cities like London and Manchester often slept standing up，bending over a piece of string， because there was no room for them to lie down.

People didn"t have fridges until the 1920s. They kept fresh food cold by storing it on windowsills （窗台板 ） ， blocks of ice， or even burying it in the garden.

Some children had to start work at the age of seven or eight to earn money for their parents. If you had lived 100 years ago， you might well be selling matchsticks （火柴杆） （a job done by many children ） or working with your dad by now.

16. On average women lived longer than men 100 years ago. 查看材料

A.Right

B.Wrong

C.Not mentioned

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第7题

阅读材料，回答题。 Satiric LiteraturePerhaps the most striking quality of satiric literatu

阅读材料，回答题。

Satiric Literature

Perhaps the most striking quality of satiric literature is its freshness, its originality of perspective.Satire rarely offers original ideas.Instead, it presents the familiar in a new form.Satirists do not offer the world new philosophies.What they do is look at familiar conditions from a perspective that makes these conditions seem foolish, harmful, or affected.Satire jars us out of complacence into a pleasantly shocked realization that many of the values we unquestioningly accept are false.Don Quixote makes chivalry seem absurd; Brave New World ridicules the pretensions of science; A Modest Proposal dramatizes starvation by advocating cannibalism.None of these ideas is original.Chivalry was suspect before Cervantes, humanists objected to the claims of pure science before Aldoua Huxley, and people were aware of famine before Swirl.It was not the originality of the idea that made these satires popular.It was the manner of expression, the satiric method, that made them interesting and entertaining. Satires are read because they are aesthetically satisfying works of art, not because they are morally wholesome or ethically instructive.They are stimulating and refreshing because with common sense briskness they brush away illusions and second-hand opinions.With spontaneous irreverence, satire rearranges perspectives, scrambles familiar objects into incongruous juxtaposition, and speaks in a personal idiom instead of abstract platitude.

Satire exists because there is need for it.It has lived because readers appreciate a refreshing stimulus,an irreverent reminder that they live in a world of platitudinous thinking, cheap moralizing, and foolish philosophy. Satire serves to prod people into all awareness of truth, though rarely to any active on behalf of truth. Satire tends to remind people that much of what they see, hear, and read in popular media issanctimonious, sentimental, and only partially true.Life resembles in only a slight degree the popular image of it. Soldiers rarely hold die ideals that movies attribute to them, nor do ordinary citizens devote their lives to unselfish service of humanity.Intelligent people know these things but tend to forget them when they do not hear them expressed.

What does the passage mainly discuss？ 查看材料

A.Difficulties of writing satiric literature

B.Popular topics of satire

C.New philosophies emerging from satiric literature

D.Reasons for the popularity of satire

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第8题

阅读材料，回答题。 Home Schooling All children in the United States have to receive an ed

阅读材料，回答题。

Home Schooling

All children in the United States have to receive an education, but the law does not say they have to be educated at school. A number of parents prefer not to send their children to school,46There are about 300,000 home-schoolers in the United States today. Some parents prefer teaching their children at home because they do not believe that public schools teach the correct religious values; others believe they can provide a better educational experience for their children by teaching them at home.47David Guterson and his wife teach their three children at home. Guterson says that his children learn very differently from children in school.48For example, when there is heavy snowfall on a winter day, it maystart a discussion or reading about climate, snow removal (去除) equipment, Alaska, polai bears (北极熊) ,and winter tourism.A spring evening when the family is out watching the stars is a good time to ask questions about satellites and the space program49

Home schooling is often more interesting than regular schools, but critics say that home-schooled are outsiders who might be uncomfortable mixing with other people in adult life.50However, most parents don&39;t have the time or the desire to teach their children at home, so schools will continue to be where most children get their formal education.

请在第__（46）__处填上正确答案。 查看材料

A.Interestingly， results show that home-schooled children quite often do better than average on national tests in reading and math.

B.Critics also say that most parents are not well qualified to teach their children.

C.Learning starts with the children"s interests and questions.

D.Children who are educated at home are known as "home-schoolers."

E..In some countries， however， children are educated by their parents.

F.If the Brazilian rain forests are on the TV news.it could be a perfect time to talk about how rain forestsinfluence the climate， and how deserts are formed.

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第9题

阅读材料，回答题： Look After Your VoiceOften speakers at ameeting experience dry mouths a

阅读材料，回答题：

Look After Your Voice

Often speakers at ameeting experience dry mouths and ask for aglass of water. You cansolve the proB．lem by activating the salivain your mouth. First gently bite the edges of your tonguewith your teeth. Or, press your entire tongue to the bottom of your mouth and hold it there untilthe salivA．flows. Or you can imagine that you are slicing abig juicy lemon and sucking the juice.

before you begin your talk, be kind to your voice. Avoid milk or creamy drinks which dryyour throat. Keep your throat wetby drinking alittle sweetened warm teaor diluted fruit juice.

If you sense that you are losing your voice, stop talking completely. In the meantime, do noteven talk in alow voice. Save your voice for your health. You may feel foolish using paper towrite notes, but the best thing you can do is to rest your voice. If it is necessary, perhaps you canget some advice from aprofessional singer.

What about drinking alcohol to wet your throat？ I advice you not to touch alcohol beforespeaking. The problem with alcohol is that one drink gives you alittle confidence. The seconddrink gives you even more confidence. Finally you will feel all-powerful and you will feel you cando everything, but in fact your brain and your mouth do not work together properly. Save the alco-hol until after you finish speaking.

Perhaps you want to accept the advice, Bbut you may wonder if you can ever change the haB．itsof alifetime. Of course you can. Goethe, who lived before indoor skating rinks or swimmingpools, said, "We learn to skate in the summer and swim in the winter". Take this message toheart and give yourself time to develop your new haB．its. If you are willing to change, you willsoon be able to say that you will never forget these techniques because they became apart of your body.

To solve the problem of dry mouths， one is advised to take cool milk. 查看材料

A.Right

B.Wrong

C.Not mentioned

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第10题

阅读材料，回答题： Natural MedicinesSince earliest days, humans have used some kinds of me

阅读材料，回答题：

Natural Medicines

Since earliest days, humans have used some kinds of medicines. We know this because hu-mans have survived. Ancient treatments for injury and disease were successful enough to keep hu-mans from dying out completely.

They were successful long before the time of modem medicine. Before the time of doctorswith white coats and shiny （发亮的）nstruments. Before the time of big hospitals with strangeand wonderful equipment.

Many parts of the world still do not have university-educated doctors. Nor do they have ex-pensive hospitals. Yet injuries are treated. And diseases are often cured. How？ By ancient meth-ods. By medicines that might seem mysterious, even magical （有魔力的）Traditional medicinesare neither mysterious nor magical, however.

Through the centuries, tribal (部落的) medicine men experimented with plants. They foundmany useful chemicals in the plants. And scientists believe many of these traditional medicinesmay provide the cure for some of today&39;s most serious diseases.

Experts say almost 80% of the people in the world use plants for health care. These naturalmedicines are used not just because people have no other form. of treatment. They are used be-cause people trust them. In developed areas, few people think about the source of the medicinesthey buy in a store. Yet many widely-used medicines are from ancient sources, especially plants.Some experts say more than 25 % of modem medicines come, in one way or another, from nature.

Scientists have long known that nature is really a chemical factory. All living things containchemicals that help them survive. So scientists&39; interest in traditional medicine is not new. But ithas become an urgent concern. This is because the earth&39;s supply of natural medicines may bedropping rapidly.

The passage indicates that ancient treatments for injury and disease were 查看材料

A.much more successful than modem ones

B.successful enough for humans to survive

C.successful in all cases

D.of little help to humans

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