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    The GUARANTEE ON THIS WATER HEATER IS IN EFFECT ONLY WHEN THE HEATER IS INSTALLED AND OPERATED IN ACCORDANCE WITH THESE INSTRUCTIONS. READ THESE INSTRUCTIONS THOROUGHLY BEFORE STARTING.
    LOCATION:
    　　Select a location accessible to water lines and power supply. Do not locate the heater where water lines could be subjected to(受…影响) freezing temperatures. It is recommended that the heater be located near the center of greatest hot water usage to prevent heat loss through the pipes.
    ELECTRICAL CONNECTIONS:
    　　Before any electrical connections are made, be sure that the heater is full of water and that the valve(阀门) in the cold water supply line is open.
    OPERATION
    When the switch is closed, the operation of this electric water heater is automatic. The thermostats are preset to the "HOT" setting to provide a water temperature of approximately 120oF to reduce the risk of being burnt.
    MAITENACE
    Shut off the electric power whenever the water supply is turned off.
    Shut off the electric power, water supply and drain the heater completely to prevent freezing whenever the building is left unoccupied during the cold weather months.
    SERVICE
    The trip–free devices on this heater will cut off all power if temperature of water is above 190F. If there is no hot water after a reasonable period of time, check the main fuse(保险丝) box. In the event that the fuses have not blown, call a serviceman.
    72.The location of the water heater shall ___________.
    A. be close to water lines and power supply
    B. be subjected to low temperature
    C. be in the centre of the house
    D. have a longer distance to hot water usage.
    73.Before any connection of power , make sure that one thing you have to do is _____.
    A. to have the heater in the water     B. to open the cold water inlet valve.
    C. to shut off the thermostats         D. to replace wiring diagram
    74.When you are not using the heater in winter months, it is better for you to________.
    A. have the tank full of clear water    B. drain the heater
    C. to leave it untouched             D. prevent it from losing heat
    75. What will happen to the heater when the temperature of water is above 190F?
    A. it will cause damage         B. It will break off automatically.
    C. It will produce cold water.    D. It will blow the fuse.

    72—75   ABBB  
    略
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    科目：高中英语 来源：不详 题型：阅读理解


    Why should I teach my children history? That sounds like a stupid question to even ask. But, as I hear different home schooling teachers discuss history, I get the idea that there may be different reasons for teaching history. Let me briefly explain the three good reasons for studying history and two bad reasons for studying history.
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    A second major reason for studying history is that it is hard to understand the current political climate in the absence of an understanding of its historical context. We can not even understand who we are and where we are without history, much less try to figure out where we are going or how we should get where we want to be.
    I teach my children history, for one more reason. I purchased a set of historical audio tapes for our children. My seven-year-old son listened to them over and over. It was my hope that he would become inspired by the accomplishments of people like the Wright brothers to accomplish things by himself. I think that it is good that we celebrate the accomplishments of people like Martin Luther King Jr. In doing so, young people are called on to stand for the principles that he stood for and accomplish what he accomplished. I also think that by studying people like Adolph Hitler, people can learn to stand against the things that he stood for.
    1. What message can we get from the underlined sentence in Paragraph 2?
    A. Many people aren’t clever enough to learn well from the past.
    B. Many people fail to make good use of history and make the same mistakes.
    C. Many people feel it hard to understand history.
    D. Many people have no interest in studying history.
    2. In Paragraph 3, the author shows that history is useful because
    A. it makes the current political situation go smoothly
    B. it helps us realize the importance of historical events
    C. it helps us understand why things are the way they are
    D. it helps people accept the present situation where they live
    3. Some historical figures are mentioned in the last paragraph to show
    A. people can be inspired to do good, while also learning to fight against evil
    B. people may also learn from bad historical figures
    C. more celebrations should be held to honor their achievements
    D. today’s people can also achieve what they achieved
    4. What would be talked about in the following paragraph?
    A. How to teach history effectively.         
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    C. How to get more people to study history.  
    D. Some bad historical figures.

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    科目：高中英语 来源：不详 题型：阅读理解


    C
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    D．They can do nothing except send and receive calls or messages．
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    科目：高中英语 来源：不详 题型：阅读理解

    .
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    In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer. The warning is: The sun’s summertime rays are more dangerous than once thought.
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    Scientists first became concerned about the ozone layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter. The hole was caused by chemicals used in refrigerators and air conditioners. When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.
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    C.  over somewhere in the north of the equator in 1980
    D.  over the U.S.A in the summertime in the mid-1980s
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    A.  the changeable weather
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    科目：高中英语 来源：不详 题型：阅读理解

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    A. Many children are concerned about the recession.
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    科目：高中英语 来源：不详 题型：阅读理解


    Global surface temperatures have increased 0.6—1.2 degrees since the late 19th century. The 20th century’s 10 warmest years all happened within the last 15 years. Of these,1998 was the warmest year on record. The snow covering the Northern Hemisphere（半球）and floating ice in the Arctic Ocean decreased. Globally, sea level has risen 4—10 inches over the past century. World-wide amount of rain and snow over land has increased by about one percent. The number of major rainfall events has increased throughout much of the United States.
    Increasing concentrations（集中）of greenhouse gases are likely to make climate change faster. Scientists expect that the average global surface temperature could rise 1.6—6.3 degrees by 2100，and the climate in different areas could change differently. Evaporation（蒸发）will increase as the climate warms, which will increase average global amount of rain and snow. Soil moisture（潮湿）is likely to decrease in many areas, and strong rainstorms are likely to become more frequent.Sea level is likely to rise two feet along most of the U.S coast.
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    A．The snow has been seen covering the Southern Hemisphere .
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    C．On the whole earth, sea level has risen 4—10 inches.
    D．The amount of the rain in the world has increased by about 1%.
    65．According to scientists, the reason why the climate becomes warm is that________.
    A．the snow covering Northern Hemisphere has decreased
    B．evaporation has increased in the recent years
    C．greenhouse gases concentrate increasingly
    D．the floating ice in the Arctic Ocean has decreased
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    A．average global little of rain and snow increases
    B．the climate becomes warm
    C．soil moisture decreases
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    科目：高中英语 来源：不详 题型：阅读理解


    E
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    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   
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    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．
    71．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
    72．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．
    73．“the younger the child the less his chances of catching up with first-grade work．” suggests that _________．
    A．the early childhood education is helpless to the child’s grade
    B．it is good for the young children to receive early education
    C．the early education can help the children follow the grade
    D．the younger the children are, the cleverer they will be
    74 The author’s attitude toward the early childhood education is _________．
    A．puzzling       B．objective      C．indifferent    D．approving
    75．The main idea of the last passage is that __________．
    A．the early childhood education is very necessary
    B．Head Start programs have helped the children a lot
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    科目：高中英语 来源：不详 题型：阅读理解


    B
    Energy-saving Finns invented the first ice skate more than 5,000 years ago, as a practical method of transport to make getting across frozen lakes less of a struggle.
    The earliest skates would have been blades made from bones and are one of the oldest means of transport ever discovered —they may even have been essential survival tools.
    Researchers at Manchester Metropolitan University have calculated that ice skates would have saved energy by 10 percent, and suggest that they were developed for practical use and were not used for recreation, as they are today.
    They think the most likely birthplace of skating is southern Finland, where there are many icy lakes.
    The scientists have put their theory to the test and made replica（复制品） skates modeled after examples held at the British Museum and the Fitzwilliam Museum in Cambridge.
    Volunteers on ice rinks in the Alps had their heart rates, oxygen intake and skating speeds measured while they skated with the replica skates. From this experiment, re-searchers were able to calculate energy consumption and the efficiency of their skating. They discovered that skating over the land in ancient Fin-land would have saved 10 percent of people’s energy. The result is based on the fact that Finland has the highest concentration of lakes in the world. The ancient Finnish people could benefit more than others from developing this tool for transport.
    In a time and environment in which the balance between energy taken from food and energy required to live was crucial; the least cost of energy might have helped humans survive in extreme conditions.
    45. The first ice skate invented by the Finns was used for _____.
    A. recreation                           B. transportation across lakes 
    C. saving energy                       D. sports
    46. The birthplace of skating might be southern Finland because _____.
    A. there are many icy lakes there  
    B. people need more oxygen to breathe in there
    C. people feel tired easily there   
    D. transportation there is more difficult
    47. Scientists have experimented with replica skates and found that with those skates the ancient
    Finnish people would have _____.
    A. crossed a lot of lakes
    B. saved 10 percent of energy when crossing the lakes
    C. climbed the Alps easily 
    D. otherwise wasted a lot of food and energy
    48. It can be inferred from the story that _____.
    A. the Finnish people were clever enough to invent the practical skates
    B. there were a lot of lakes in ancient Finland
    C. the living conditions were very hard for the ancient Finnish people
    D. it was very cold in ancient times in Finland

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    科目：高中英语 来源：不详 题型：阅读理解


    B
    Science isn’t something mysterious, only for the few. Every one of us—whether a poet, worker, or physicist has to be able to think scientifically, and to understand some science, such as whether to smoke, what to eat, and what protection to use. Even for decisions that don’t depend on some scientific facts, science remains the proven set of best methods for getting exact information about the world.
    Some people will end up as policy-makers in government or business. People such as these make decisions that affect the life of everyone, and most of them know no more about science than does the rest of the general public. Yet they are called upon to decide what to do about nuclear reactors(核反应堆), global warming, environmental toxins(环境霉素), expensive space programs, and biomedical research. It’s nonscientists, not scientists, who have the last word on whether the milk we drink can safely come from cows treated with medicine. To make such decisions wisely, the decision makers have to be drawn from a scientifically educated public.
    Even if science is irrelevant（不相干的） to the lives of ordinary Americans, a strong scientific spirit is basic to our economy, educational system, and society. This requires lots of young people to become excited enough by science that they decide to become professional scientists. This also requires, to some degree, the support and understanding of the general public.
    Scientists are not always able to communicate their findings in an easy-to-understand manner. Although the scientists should do a better job of explaining what they have discovered, members of the general public have to make efforts to understand what is being said.
    46．What does the author mean by saying that “a strong scientific spirit is basic to the economy, educational system and society”?
    A．School and society should encourage young people to become professional scientists.
    B．The school should only teach lessons of economy and education·
    C．A scientifically educated public is basic to the economy，educational system and society.
    D．More scientists work in our economy, educational system and society.
    47．The general public is required to _______.
    A．support and understand the need of scientific education
    B．check what the scientists are saying
    C．give help to the policy-makers
    D．become professional scientists
    48．The main idea of this passage is _________.
    A．policy—makers must be science professionals
    B．science is not far from everyone’s life
    C．science has nothing to do with ordinary Americans
    D．science professionals make decisions that affect the life of everyone
    49．According to the passage, who can decide whether the milk we drink can safely come from
    cows treated with medicine?
    A．Scientists      B．Young people      C．The public     D．Policy-makers

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