题目
题型：不详难度：来源：
There is a definite possibility that the climate of the world may be changing. Some scientists imagine that this could even mean the beginning of another ice age. The effects of such a change in climate on the human population of the world would be startling（惊人的）.
Recent research suggests that the general warming trend of the past hundred years or so may be coming to an end. During the past ten years, meteorologists tell us the average temperature of the Earth has dropped about one degree Fahrenheit. This does not seem like much, but it could have effects on wind and rain patterns which influence the overall weather picture. If these patterns change a lot, it could mean that certain regions of the world may continue to have long droughts while others will possibly suffer from widespread flooding.
What regulates（调节）the climate is not exactly known. Meteorologists believe that clouds may be an important factor in regulating the amount of solar heat held by the Earth, which in turn determines the temperature of the planet. Another possibility is that man’s industrial and agricultural methods may be affecting the natural weather patterns. However, the weather is not understood well enough for scientists to say for certain what is happening to the climate and what side effects this will actually have on the world’s population.
小题1:According to the passage, the climate of the world seems to .
| A．be getting colder | B．be getting warmer |
| C．remain the same in the past ten years | D．have good effects on the world’s population |
| A．Man’s activities have no effect on the climate. |
| B．Another ice age will come soon. |
| C．People don’t care about the changing climate. |
| D．Scientists are not yet sure about the reason for the changing climate. |
reads weather forecasts on radio or television
B. thinks there will be another ice age
C. studies and knows about the weather
D. believes there will be widespread flooding
小题4: Which of the following may be the factor(s) that affect(s) the natural weather patterns?
| A．Clouds. | B．The amount of heat the Earth receives. |
| C．Man’s industrial and agricultural methods. | D．All of the above. |
| A．Droughts and Floods. | B．Meteorologists |
| C．The Changing Climate | D．Solar Heat |
答案
小题1:A小题1:D小题1:C小题1:D小题1:C
解析
略
核心考点
试题【There is a definite possibility that the climate of the world may be changing. S】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Broken rubber bands and flat tires requiring replacement could soon be a thing of the past．French researchers have developed a new kind of rubber that can repair itself when broken．The new rubber is made from widely available materials including vegetable oil and a common industrial chemical．All the materials are considered safe to the environment and can be easily reused．The best part is that the new rubber can be repaired and used again and again without losing its strength or ability or stretch．When cut, the rubber can be made new again, simply by pressing the two broken ends back together．The product can be repaired at room temperature, around twenty degrees Centigrade；other self-healing materials require higher temperatures for repair．Traditionally, rubber substances are made from huge molecules（分子）connected by strong chemical links, or bonds．The new rubber is made of smaller molecules．The molecules are linked together using hydrogen bonds．When connected in this way, the molecules act like one long molecule, forming what is called supramolecular networks（超分子网）．When the rubber is cut, the molecules attempt to connect with whatever molecule is near them．When pressed together, the molecules are able to repair themselves at the molecular level, making the repaired rubber like new．However, time is an important element in the process．If the broken ends are not brought together quickly, a repair is not possible．This is because molecules will form bonds with molecules on their own side．The inventors say the surfaces of the rubber can be repaired within a week of being separated．The rubber is the creation of scientists at the Industrial Physics and Chemistry Higher Education Institution in Paris．The organization is part of France’s National Center for Scientific Research．The new material is described in greater detail in the research publication Nature．小题1:According to the introduction, which of the following is NOT the advantage of the new rubber?| A．It can be made as easily as common rubber． | B．It is environmentally-friendly． | C．It can repair itself at room temperature． | D．It is made of smaller molecules． |
小题2:What does the 5th paragraph mainly tell us?| A．Why the new rubber is unique． | B．Why the new rubber can repair itself． | C．The new rubber is made from huge molecules． | D．The new rubber is different from the common rubber． |
小题3:If we want to know more about the technology of this kind of new rubber, where can we get the information?| A．In the researchers’ diary． | B．In a guide book． | C．In a research magazine． | D．In a newspaper． |
If a business，big or small，looked down upon these odds and ends，it would mean a big difference in the amount of the benefit of the business．Take a meat factory for instance， there are countless odds and ends—bones and hair，which can be made into glue and rope to increase its profit greatly．
Then，if we are college students，what about our odds and ends—the odd moments？ Take time for example．Every one of us has the exact same amount of it．Everyone’s success or failure depends on the use of their time．But everyone uses the time more or less in the same way．However，why many great men in science or art have made huge successes for themselves in the world？Because they have made best use of their odd moments．Take Thomas A．Edison， he never allowed his odd moments to slip by．He thought，planned，and tried his inventions．He always worked twenty hours out of each twenty-four．His inventions made him famous all over the world，and provided valuable wealth for the human beings．
So, remember this axiom：very busy people always find time for everything．However，people with great spare time find time for nothing．Is it very strange？Not at all！The question is how to gather up fragments of time and make full use of them．As many big businesses have found，that the real profit is in using the odds and ends．We also must do in this way to make best use of our odd moments and manage to be successful in something that we do．
小题1: What are odds and ends？
| A．They are nothing useful． |
| B．They are various small，but valuable things． |
| C．They are the main things that factories produce． |
| D．They are odd moments students deny to gather up． |
| A．lots of factors in success or in failure depend on the best use of odds and ends |
| B．they control to possess a value of their own |
| C．they are various small things people don’t want |
| D．they are useless things left over when the main things are produced |
| A．clear and evident without proof |
| B．statement accepted as true without proof of argument |
| C．statement that can be argued |
| D．regulation accepted in scientific usage |
| A．the odds and ends | B．immense leisure |
| C．the main things | D．the odd moments |
There are good reasons for the government to push early childhood education．Studies have shown that orphaned children who did not receive good care and education become developmentally delayed causing failure in school, and even in life．Further studies show that poor children who take part in Head Start programs are more prepared for school, less likely to end up in Special Education classes, and are less likely to receive public help or go to jail．
There are also negative parts to putting a child in formal education programs too early．Time Magazine online explains that “the younger the child the less his chances of catching up with first-grade work．” I have personally witnessed many children of my generation who went to Head Start programs become frustrated and bored with school before they finished high school．Yet parents have been sure that the earlier the child starts school, the better off he or she is, so they push to start children earlier．
Actually while early formal education of poor children does show great gains in the early elementary years, studies also show that this head start is really a “false start”, as the gains are lost in middle and high school years．It seems that environment is a bigger factor on life’s success than early education．Head Start programs have not achieved its original goal in closing the achievement gap in poor and middle school children．Perhaps it is time to find other ways to close that gap．
小题1:The purpose of the government valuing the early childhood education is ________．
A．to develop the children’s communication
A．to give orphaned children good care and education
C．to get the children prepared for the kindergarten
D．to train the children formally and regularly
小题2:According to the studies, which of the following is True?
| A．Children with good early education may have a rich life． |
| B．The orphaned children are usually unhappy in their life． |
| C．Children without early education can do well at school． |
| D．Head Start programs are helpful to the poor children． |
| A．puzzling | B．objective | C．indifferent | D．approving |
| A．the early childhood education is very necessary |
| B．Head Start programs have helped the children a lot |
| C．environment is the most important to life’s success |
| D．better ways should be found to help the poor children |
Scientists show a number of reasons for this return to the nest．The marriage age is rising, a condition that makes home and its pleasantness particularly attractive to young people．A high divorce （离婚） rate and a low remarriage rate make some differences．For some, the expense of an away - from - home college education has become so great that many students now attend local schools．Even after graduation, young people find their wings tied by terrible housing costs．
Living at home, says Knighton, a school teacher, continues to give security （安全保卫） and moral（道义的） support．Her mother agreed．“Its strange for the kids to pay all that money for rent．It makes sense for kids to stay at home．” But sharing the family home requires changes for all．There are the hassles over bathrooms, telephones and privacy．Some families, however, manage the careful balancing act．But for others, it proves too difficult．Michelle Del Turco, 24, has been home three times and left three times．“What I considered a social drink, my dad considered an alcohol （酒精） problem,” she explains．“He never liked anyone I dated, so I either had to hide away or meet them at friends" houses．”
Just how long should adult children live with their parents before moving on? Most scientists feel lengthy homecomings are a mistake．Children, can end up with a sense of defeat and failure．And aging parents,
who should be enjoying some freedom, find themselves stuck with too many things．Many agree that brief visits, however, can work well．小题1:According to the author, there w
as once a trend in the U．S．________．| A．for young adults to leave their parents and live separately |
| B．for middle class young adults to stay with their parents |
| C．for married young adults to move back home after a lengthy absence |
| D．for young adults to get jobs nearby in order to live with their parents |
| A．Young adults find housing costs too high． |
| B．Young adults are not old enough． |
| C．Young adults look for parental comfort and support． |
| D．Quite a number of young adults attend local schools． |
| A．agreements | B．worries |
| C．disadvantages | D．quarrels |
| A．They should share the family expenses． |
| B．Children should leave their parents when they are grown up． |
| C．Adult children should live away from their parents and visit their parents from time to time． |
| D．Parents should support their adult children when they are in trouble． |
at ______．| A．there will certainly be inconveniences in even-day life |
| B．most parents find it difficult to keep a bigger family going |
| C．the young adults try to be overprotected by their parents |
| D．public opinion is against young adults staying with their parents |
Some construction materials, including fiberboard, insulation foams and certain glues for man-made wood floor boards, for example, give out organic products such as formaldehyde （甲醛)． Heat and humidity increase the release of formaldehyde and the gas seriously harms the eyes． Paint, lacquer, etc． can also release dangerous gas into indoor air．
Construction materials can cause serious damage, especially when they contain asbestos（石棉）． Asbestos is naturally present in rock formations worldwide． It belongs to a family of mineral substances made up of solid, non-combustible（非易燃品） fiber． These properties make asbestos a highly sought-after construction material． As early as 1931, however, public health officers in t
he United Kingdom revealed the connection between breathing in asbestos dust and such diseases as lung cancer．The land on which a building is sited may also contribute to pollution． Some kinds of granite or similar rocks contain traces of radium． As it breaks down, this naturally radioactive element produces some kind of radioactive gas that goes through tiny cracks in walls, floors and building materials, and makes its way into the building and the rooms． The better the homes are insulated, the more is the dangerous gas in indoor air． The main effect of this dangerous gas on health is to increase the risk of lung cancer．
小题1:What is the main idea of the passage?
| A．Some building materials pollute indoor air． |
| B．Some factors cause indoor air pollution． |
| C．Asbestos can cause lung cancer． |
| D．The land on which houses are built contributes to indoor pollution． |
| A．Lots of building materials there are radioactive． |
| B．They stay home up to 90% of their lives． |
| C．They have a high rate of lung cancer． |
| D．They spend most of their time indoors． |
| A．It is a kind of insulation foam． |
| B．Asbestos will not give out dangerous gas． |
| C．This material is not easy to catch fire． |
| D．It is rarely present in rock formations． |
| A．To determine whether the land is firm enough for a building to be sited on． |
| B．To make sure that the land contains no radioactive material． |
| C．To make certain that the land releases no formaldehyde or other gases． |
| D．To check whether it contains any combustible materials． |
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