4、Polar bears are born in dens（洞穴）on land and their mother stays with them for the whole winter without eating anything．The mother and the babies emerge around March，famished from a long winter and must immediately go hunting to find food to stay alive．Now, the only hunting they know is to catch seals from floating ice in the open ocean．In March，polar bear mothers and cubs have to swim from the land in Spitsbergen to the edge of the polar ice cap．

      Normally this is a short swim，since in March the polar ice cap is very close to the land，and the polar bears，and even the babies，are good swimmers．However，last year we saw that the polar ice cap had really shrunk in size due to global warming

Swimming hundreds of miles，especially when they are hungry and have babies following them is really hard，and many bears are dying because of starvation．

The polar bear population in the Spitsbergen area was once threatened by hunters．In the 1970s，a ban on hunting was imposed and the polar bear population has been steadily increasing from just a few hundred to about 2，000 to 3，000．This was a great success story．However，now，because of global warming，the population is again in danger．If we do not stop making so much earbon dioxide。we will lose these beautiful animals forever．

The polar bears are just one example of animals that have become endangered because of man’s appetite for energy obtained by burning fossil fuels．All life on earth could be in danger unless we change our ways，What can we do? To reduce the amount of carbon dioxide in the air we must conserve and make energy without burning coal and oil．Instead，we can use the sun or the wind to generate electricity．We must also cut down on needless driving and turn things that use electricity off  when we are not using them．In addition，we have to stop cutting down forests and start planting more trees．

66．Why do the bear swim to the edge of the polar ice cap?

A．To get back to the ocean.                            B．To catch seals for food.

C．To get to a colder place．                            D．To teach their children how to swim．

67．What does the underlined word“famished”mean in this passage?

A．Hungry．               B．Thirsty．                C．Excited．               D．Tired．

68．Now that the polar ice cap is smaller，

A．it is easy for polar bears to find food            B．it takes them less time to catch seals

C．they have to swim farther to get to it            D．fewer seals will come to the shore

69．Many bears die in the ocean because

      A．they are not very good swimmers

B．they don’t have enough strength to swim to the polar ice cap

C．the number of seals has decreased so they can’t get enough food

       D．they are hunted by human beings

70．What does the last paragraph mainly tell us about?

A．The importance of protecting polar bears．   B．Ａway to make use of the solar energy．

C．Measures to protect our environment．        D．Damage done by burning fossil fuels．

3、Based on a telephone survey of about 72，000 people in 2005，only about l in 4 Americans knows the warning signs of a heart attack and what to do first，according to a new government report．That’s a decline from the last survey in 2001，which showed that nearly 1 in 3 were well informed．

The study’s lead author，Dr．Jing Fang，called public awareness in the new survey“alarmingly low”．Fang is with the Center for Disease Control and Prevention，which surveyed residents of 13 states and District of Columbia．

Heart attack warning signs can include one or more of the following：shortness of breath，pain or discomfort in the chest，discomfort in the arms or shoulders，a feeling of weakness or light headedness，and discomfort in the jaw，neck or back．Chest pain is the most common symptom．Women are more likely than men to experience some of the other symptoms，Particularly shortness of breath and back or jaw pain，according to the American Heart Association．Anyone experiencing these symptoms should call 911，the heart association advises．In America，the groups best informed of heart attack warning signs，and what to do，tended to be white，highly educated and women．Also scoring well were residents of West Virginia，which has Some of the nation’s highest heart attack death rates．

Each year more than 900，000 Americans suffer heart attacks，about 157，000 of them fatal（致命的）．About half the deaths occur within an hour of the symptoms appearing，experts say．Because different people experience different symptoms，it’s important to be aware of all of them，doctors say．

Of course，knowing is not the same as doing, Although most of those who got the heart attack symptoms right said they would call 911,other studies show that only about half of heart attack victims go to a hospital by ambulance, Rosamond noted．

Patients’ concerns about lack of health insurance or other matters may explain why so few went to a hospital，said Rosamond，who was not involved in the new study．

61．What’s the main topic of the passage?

A．People’s declining knowledge of heart attack symptoms．

B．The importance of knowing the heart attack warning signs．

C．The seriousness of heart attacks．

D．Some of the symptoms of heart attacks．

62．We learn from the passage that American women

A．suffer more chest pain from heart attacks

B．have a greater possibility to experience shortness of breath in heart attacks

C．have heart attacks more often than men

       D．having heart attacks all experience rather similar symptoms

63．Who is most likely to know the most about heart attack warning signs?

A．A white，poorly educated man                    B．A white．highly educated woman．

C．A black．highly educated woman．             D．A black high school boy．

64．Why don’t Some people who get heart attacks call 91 l?

      A．Because they don’t trust doctors in the hospital．

      B．Just because they are suffering too much to move．

      C．Partly because ambulances are not available to them．

D．Partly because they don’t have health insurance

65．What do we learn from the passage?

       A．Patients with heart disease rarely suffer chest pain．

       B．Dr．Jing Fang did the survey by himself．

C．West Virginia has the lowest heart attack death rate．

D．A person having a heart attack may have one or more symptoms．

2、    A long―term American study has shown the importance of early education for poor children. The study is known as the Abecedarian Project．It involved more than one hundred young children from poor families in North Carolina．

    Half of the children attended an all-day program at a high―quality childcare center．The center offered educational．health and social programs．The children took part in games and activities to improve their thinking and language skills and social and emotional development．

    The children attended the program from when they were a few weeks old until the age of five the other group of children did not attend the childcare center. At the age of five，both groups Started to attend public schoo1．

    Researchers compared the two groups of children．When they were babies，both groups had babies similar results in tests for mental and physical skills．However, from the age of eighteen months．the children in the educational childcare program did much better in tests．

    The researchers tested the children again when they were twelve and fifteen years old．The tests found that the children who had been in the childcare center continued to have higher average test results．These children did much better in tests on reading，and mathematics．

   When each student was twenty-one years old．they were tested again for thinking and educational ability，employment，parenting and social skills．The ones that had received an early education were more than twice as likely to be attending college or to have completed college．

    In addition．the ones who received an early education were older on average，when their first child was born，than those who hadn’t received an early education．

    The study has shown more evidence that learning during the first months and years of life is important for all stages of later development．

The researchers of the Abecedarian Project believe their study shows a need for lawmakers to spend money on early public education．They believe these kinds of programs could reduce the number of children who do not complete school and then become unemployed．

56．The Abecedarian Project lasted

A．a(chǎn)lmost ten years                                      B．20 years

C．over 20 years                                            D．no more than 15years

57．What do we know about the people who had been in the childcare center，compared with those who hadn’t?

A．They were more likely to go to college．      B．They had children earlier．

C．They have similar results in tests．                     D．They are less sociable．

58．The Abecedarian Project

A．carries out a lot of tests to learn more about children

B．provides food that is good for children’s health

C．offers foreign teachers to help improve children’s language skills

D．studies the benefits of an early education for poor children

59．What can we conclude from the study?

A．Learning from a very early age is important for our later development．

B．Children in poor families are better at reading and mathematics．

C．Even babies show different results in tests on mental and physical skills．

D．Lawmakers will spend money on early pubic education

60．What is the indirect effect of the childcare center program?

A．It improves children’s social and emotional development．

B．It develops children’s thinking and learning abilities．

C．It helps to reduce the rate of unemployment．

D．It develops children’s．1anguage skills．

1、    It seemed like an everyday moment，but now I realize that when he introduced himself to me，it was the beginning of a life-changing experience．

    I met him at a summer   36   ，and although I met hundreds of people every day，I became his   37   ．We talked，like everyone else，about our   38   and hobbies．We were not  39   at all，but we really had a lot in common．By the end of the camp，we were   40   stories and laughs，and promised to   41   ．

      When I returned home，I   42   that I had lost the paper with his e-mail address on it．I looked through all my stuff，but without   43   ．One day，I thought to look him up on the online network that was set up for the campers．   44   I was online，an instant message suddenly appeared on the   45   ．It was the boy who I had just tried to   46   a moment before.

    A series of very meaningful conversations   47   then．I don’t know   48   ，but for some reason we started to   49   our deepest feelings in   50   ，and learned from each other’s pain and experiences．It was a very new   51   for me，and it was extremely beneficial to my heart and my soul．I had   52   found someone who was willing to   53   me without prejudice．

    I have only known him for three months，yet the   54   that has occurred in me is immense．I love，I live，and I believe in my life．I no longer cry every night because of the   55             inside me．I dearly hope，even though we are hundreds of miles apart and can only communicate by messaging，that he has also benefited from our exchanges．

25、 You need a password to get ______to the computer system.

24、 I was lost in the strange city; ______it began to rain heavily.

23、He’s very sensitive about being small, so don’t mention it. Which of the following has the same meaning as the word underlined.

       A．This material is sensitive to heat.

       B．When I need advice, he is a helpful and sensitive friend.

       C．A writer mustn’t be too sensitive to criticism.

       D．The Stock Exchange is sensitive to likely political changes.

22、It is said that the police have        a lot of new information about the wanted man.

       A．turned up            B．turned out            C．turned over          D．turned on

21、When _____ comes to codes of ethics, I think everyone should strictly obey them.

  A. that             B. this             C. it                    D. one

20、One of the collectors collected some seeds from a tree that had _____ him.

  A. interest in     B. appealed to     C. been attracted    D. drew attention of