There are two types of twins; identical and non-identical twins. Identical twins are formed from a single egg in mother’s body which divides to from two separate babies. Identical twins look the same, and are often dressed by their parents in clothes of the same colors. It is often difficult to tell identical twins from each other, even when they are standing side by side. Non-identical twins come into being when the mother produces two separated eggs a the same time, both of which grow to form babies. In this case the twins look like normal brothers and sisters and are easy to tell one from the other.
　　In the 1970s and 1980s a scientist did some research into twins. He invited many pairs of identical twins to university and asked them to take part in a week of tests. He was particularly interested in adopted (收养) twins who had been separated at birth. He would give the twins different kinds of tests to study their speed of thinking, their speech, their memory, the ways they saw and heard different things, and so on. Time and time again he found separated twins who preferred clothes of the same color, used the same kind of shaving soap, wore the same shaped square glasses and the same colored socks.
　　There is a third type of twins, but it is a very unusual one. Twins which are joined together at birth are known in western countries as Siamese twins.
【小题1】It is difficult to tell identical twins apart because _______.

   Mrs Leonard was round and pretty, with shining brown hair and warm, dark,   7   eyes. Everyone adored (敬重) her. But   8   came to love her more than I did. And for a   9   reason.

   The time came for the   10   tests given at our school. I could only just hear out of one ear, and was not   11  to reveal something else that would single   12   out as different. So I cheated.

   The “whisper test”   13   each child to go to the classroom door, turn sideways, close one ear with a finger,   14   the teacher whispered something from her desk,   15   the child repeated. Then the same for the other ear. Nobody checked how tightly the   16   ear was covered, so I only pretended to block mine.

   As  17   I was the last. But all through the testing I   18   what Mrs Leonard might say to me. I knew from previous years that the teacher   19   things like “The sky is blue.” Or “Do you have new shoes?”

   My   20   came. I turned my bad ear toward her,   21   the other just enough to be able to hear. I waited and then came the words that God had surely put into her mouth,   22   words that changed my life   23   .

   Mrs Leonard, the teacher I   24   , said softly, “I   25   you were my little girl.”

1　　 A. liked　　　　 B.　　  loved  　　　　  C.   hated　　　　 D expected

2.    A. lip 　　　　  B. ear　　　　　　    C.    finger　　     D. eyes

3.    A. broken       B.cut　　 　　　　　　C.   formed　　    D.killed

4.    A. very　　     B.much　　　　　　   C.   more　　　　  D.even

5.    A. strange　　   B.happy　　   　　   C.    sad　　　　    D.different

6.    A. inside    　　 B.with&nbtsp
;  　　　　　　 C.  as well as　　  D.outside

7.    A. surprised　　   B.smiling  　　　　   C.frightening　　 D.blind

8.    A. everyone　　   B.no one　　　　　　  C. anyone 　　   D.none  

9.    A. special　　　　 B.strange　　　　　　 C. usual　　　　  D.simple

10.   A. arithmetic算术  B.history　　　　　　 C.  hearing   　　 D.　　   blood

11.   A. excitedly　　   B.when   　　　　　　C. about  　　　　D.how

12.   A. me    　　　　B.Mrs Leonard　　　　 C.　　   us　　    　　 D.the pupils

13.   A. encouraged　　 B.persuaded　　  　　  C.required       D.agreed

14.   A. if　　　　　　 B.so　　　　　　　　  C.as if　　　　   D.While

15.   A. that　　　　   B.what   　　　　　　 C.　　   after　　　　   D.which

16.   A. untested　　   B.left　　   　　　　 C.bad　　       D.tested

17.   A. usually 　　   B.follows　　 　　　　 C.usual   　　   D.well

18.   A. examined　　  B.wondered　　    　　C.understood　　  D.noticed

19.   A. questioned　　 B.announced    　　  C.shouted    D.whispered

20.   A. teacher　　    B.time　　　　　　　　 C.opportunity　　 D.chance

21.   A. picking up　　 B.plugging up　　       C.closing　　　　 D.opening

22.   A. seven　　　　 B.some　　　　　　     C.several　　    D.lovely

23.   A. sometimes　　 B.    usually    　　　　 C.forever　　    D.all

24.   A. knew   　　  B.adored    　　　　   C.　　   realized   　　 D.spoke

25.   A. expect   　　 B.wish　　 　　　　　　C.wanted    　　 D.knew

Thirty- two people watched Kitty Genovese being killed right below their windows. She was their neighbor. Yet none of the 32 helped her. Not one even called the police. Was this in gunman cruelty? Was it lack of feeling about one’s fellowman?

　　“Not so,”say scientists John Barley and Bib Fatane. These men went beyond the headlines to research into the reasons why people didn’t act. They found that a person has to go through two steps before he can help. First he has to notice that is an emergency（紧急情况）. Suppose you see a middle-aged man fall to the side - walk. Is he having a heart attack? Is he in a coma（昏迷） from a headache? Or is he about to sleep off a drunk? Is the smoke coming into the room from a leak（漏洞）in the air conditioning? Is it “steam pipes”? Or is it really smoke from a fire? It’s not always easy to tell if you are faced with a real emergency. Second, and more important, the person faced with an emergency must feel personally responsible（负责任的）. He must feel that he must help, or the person won’t get the help he needs.

　　The researchers found that a lot depends on how many people are around. They had college students in to be “tested.”Some came alone. Some came with one or two others. And some came in large groups. The researchers started them off on the “tests.”Then they went into the next room. A curtain divided the “testing room”and the room into which they went. Soon the students heard a scream, the noise of bookshelves falling and a cry for help. All of this had been prerecorded on a tape recorder.

　　Eight out of ten of the students taking the test alone acted to help. Of the students in pairs, only two out of ten helped. Of the students in groups, none helped.

　　In other words, in a group, Americans often fail to act. They feel that others will act. They, themselves, needn’t. They do not feel any direct responsibility.

　　Are people bothered by situations where people are in trouble? Yes. Scientists found that the people were shocked, they sweated, and they had trembling hands. They felt the other person’s trouble. But they did not act. They were in a group. Their actions were shaped by the actions of those they were with.

60. The purpose of this passage is ________.

　A. to explain why people fail to act in emergencies

　B. to explain when people will act in emergencies

　C. to explain what people will do in emergencies

D. to explain how people feel in emergencies

61. Which of the following is NOT true?

　　A. When a person tries to help others, he must be clear that there is a real emergency.

　　B. When a person tries to help others, he should know whether they are worth his help.

　　C. A person must take the full responsibility for the safety of those in emergencies if he wants to help.

　　D. A person with a heart attack needs the most.

62. The main reason why people fail to act when they stay together is that ________.

　 A. they are afraid of emergencies

　 B. they are not willing to get themselves involved

　 C. others will act if they themselves hesitate

D. they do not have any direct responsibility for those who need help

63. The author suggests that ________.

　　A. we shouldn’t blame a person if he fails to act in emergencies

　　B. a person must feel guilty if he fails to help

　　C. people should be responsible for themselves in emergencies

D. when you are in trouble, people will help you anyway

31^st October —— A team of British explorers has announced they are going to the North Pole to measure the ice cap’s thickness. The exploration will take ground-based readings (仪表的读数) of an ice formation which most scientists agree is shrinking at an alarming rate.

    Explorer Pen Hadow’s three-member team will pull a sled-fixed radar device, which measures ice density every eight centimeters, 2,000 kilometers across the Arctic and will produce millions of readings.

    They will leave in February, 2008 and will face temperatures of -50℃ on a journey that will take up to 120 days. They have been testing their equipment in Britain and Canada.

    Hadow is excited about the prospects (前景), “For the first time we will be able to transmit video images — webcam film of the expedition — as it unfolds so people can track us, and the whole idea is to engage as many people as we can in what we’re doing.”

    New fallen snow on top of the ice makes ground-based measurements more accurate than satellite data.

    “It has been in the planning stage for a while,” said Hadow. “We spent the last two years developing impulse radar (冲击雷达), which normally is about 100 kilograms and hangs under an aircraft and so on. We’ve managed to get it down to about 4 kilograms. It’s the size of a briefcase and we are dragging it behind the sled as we go.”

　　　　The ice cap shrank enough in 2007 so that a pathway through the cap known as the Northwest Passage opened up during the melting of the Arctic summer.

    Cambridge University’s Joao Rodrigues explains, “Thickness of the ice cap will determine how much solar radiation will be reflected and the heat exchange between the ocean and the atmosphere and it is thus a vital component (成分) of climate models.”

    If warming trends continue, some experts predict that the Arctic Ocean could be ice-free during the summer within a few decades.

１ What would be the best title for the text?

A. Exploration to the North Pole.

B. Arctic ice cap shrinking.

C. Arctic ice survey announced.

D. Ground-based measurements of ice.

２. What is special about the exploration?

A. It will be broadcast live on the Internet.

B. Explorers will use a sled-fixed radar device.

C. Explorers will travel in extremely cold conditions.

D. Ground-based measurements are more accurate.

３. What is the purpose of the exploration?

A. To measure the ice cap’s thickness.

B. To study whether ice will disappear in the Arctic.

C. To make a film about the Arctic exploration.

D. To make people interested in what they are doing.

４. It can be inferred from the passage that ________.

A. ice in the Arctic will disappear in ten years

B. the exploration will last for half a year

C. Hadow spent two years developing a kind of radar, which is about 100 kilograms

D. if there is snow on ice, satellites can’t measure the ice thickness accurately enough

５. From the passage, we learn that ________.

A. the explorers will measure ice density every other centimeter

B. people will be able to follow the explorers and see what they are doing  

C. people could go through the Northwest Passage in the 2007 Arctic summer

D. the equipment that Hadow’s team use will be tested in the United States

For years we have been told that encouraging a child's selfrespect is important to his or her success in life.But child experts are now learning that too much praise can lead to the opposite effect，Praise?aholic_kids who expect it at every turn may become teens who seek the same kind of approval from their friends when asked if they want to go in the backseat of the car.

The implication (含义)of saying “You are the prettiest girl in class，” or talking about the goals she scored but not her overall effort，is that you love her only when she looks the best，scores the highest，achieves the most.And this carries over to the classroom.

Social psychologist Carol Dweck，PhD，tested the effects of overpraise on 400 fifth graders while she was at Columbia University.She found that kids praised for “trying hard” did better on tests and were more likely to take on difficult assignments than those praised for being “smart”．

“Praising attributes (品质) or abilities makes a false promise that success will come to you because you have that quality，and it devalues effort，so children are afraid to take on challenges，” says Dweck，now at Stanford University.“They figure they'd better quit while they're ahead.”

1．The underlined words “Praise?aholic kids” refer to kids who are ________.

A．tired of being praised

B．worthy of being praised

C．very proud of being praised

D．extremely fond of being praised

2．The author quoted (引用) Dr.Dweck's words in the last paragraph in order to make the article________.

A．better?known　 　　　 B．better?organized

C．more persuasive　 　 D．more interesting

3．We can infer from the passage that ________.

A．praise for efforts should be more encouraged

B．praise for results works better than praise for efforts

C．praising a child's achievements benefits his or her success in life

D．praising a child's abilities encourages him or her to take on challenges