C

When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure--and so soon--that another ant is dead.

One scientist recently came up with a way to explain this ant behavior. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I’m dead--take me away” when it is dead.

One scientist recently came up with a way to explain this ant behavior. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I’m dead---take me away” when it is dead.

But there's a question to answer: As we know, if an ant is dead, it stops moving. But when an ant is sleeping or knocked unconscious, it is also not moving. However, other ants don't move the living ant out of the nest. How do they know this ant is not dead? Choe found that ants have another chemical on their bodies, which tells nearby ants something like, “Wait—I'm not dead yet” when it is not dead. Choe suspects that when an ant dies, the chemical that says, “Wait— I'm not dead yet” quickly goes away. When other ants detect the “dead” chemical without the “not dead yet” chemical, they move away the body.

To test his theory, Choe and his team put different chemicals on ants. When the scientists used the “I'm dead” chemical, other ants quickly moved the treated ant away. When the scientists used the “Wait—I'm not dead yet” chemical, other ants left the treated ant alone. Choe believes this behavior shows that the “not dead yet” chemical overrides the “dead” chemical when picked up by other ants. And that when an ant dies, the “not dead yet” chemical fades away. Other nearby ants then detect the remaining “dead” chemical and remove the body from the nest.

Understanding this behavior can help scientists figure out how to stop ants from invading new places and causing problems.

1.What is the function of the first paragraph?

A. Leading the following paragraphs.

B. Showing the main idea of the passage.

C. Introducing the background of the passage.

D. Giving a summary of the passage.

2.Which of the following has the closest meaning to the underlined word “overrides” in the fourth paragraph?

A. is weaker than          B. is stronger than    C. is better than                     D. is worse than

3.What can we learn from the passage?

A. Living ants can also be taken away when they are not moving.

B. When an ant dies, it can tell others using a certain chemical.

C. A living ant can pretend to be dead using a special chemical.

D. Ants often use chemicals to communicate with each other.

4.Which of the following descriptions about Dong-Hwan Choe is right?

A. Choe did this study in order to stop ants from invading new places.

B. Choe is a biologist who is only interested in animals, especially in ants.

C. Choe first came up with an idea to explain this ant behavior，and then did some tests to prove his theory.

D. Choe did the research on this ant behavior on his own.

                      D

After giving a talk at a high school, I was asked to pay a visit to a special student. An illness had kept the boy home, but he had expressed an interest in meeting me, and it would mean a great deal to him. I agreed.

During the nine-mile drive to his home, I found out something about Matthew. He had muscular dystrophy（肌肉萎缩症）. When he was born, the doctor told his parents that he would not live to see five, and then they were told he would not make it to ten. Now he was thirteen. He wanted to meet me because I was a gold-medal power lifter(举重运动员), and I knew about overcoming obstacles (障碍) and going for my dreams.

I spent over an hour talking to Matthew. Never once did he complain or ask, “Why me?” He spoke about winning and succeeding and going for his dreams. Obviously, he knew what he was talking about. He didn’t mention that his classmates had made fun of him because he was different. He just talked about his hopes for the future, and how one day he wanted to lift weight with me.

When we finished talking, I went to my briefcase(衣箱) and pulled out the first gold medal I won and put it around his neck. I told him he was more of a winner and knew more about success and overcoming obstacles than I ever would. He looked at it for a moment, then took it off and handed it back to me. He said, “You are a champion(冠军). You earned that medal. Someday when I get to the Olympics and win my own medal, I will show it to you.”

Last summer I received a letter from Matthew’s parents telling me that Matthew had passed away. They wanted me to have a letter he had written to me a few days before:

Dear Rick,

My mom said I should send you a thank-you letter for the picture you sent me. I also want to let you know that the doctors tell me that I don’t have long to live anymore. But I still smile as much as I can.

I told you someday I was going to the Olympics and win a gold medal. But I know now I will never get to do that. But I know I’m a champion, and God knows that too. When I get to Heaven, God will give me my medal and when you get there, I will show it to you. Thank you for loving me.

       Your friend,

        Mathew

72.  The boy wanted to meet the author because ______.

       A. he was interested in what the author was doing 

B. he wanted to get a gold medal himself

       C. he admired the author very much    

D. he wanted the author to know him too

73.  The underlined part in the third paragraph probably means “______”.

       A. Why do you come to see me?    B. Why do I have to stay at home?

       C. Why does the disease fall on me?     D. Why not give a gold medal to me?

74.  We can infer from the passage that ______.

       A. Matthew was a determined boy and considered himself as normal

       B. Rick used to have the same disease and later became a power lifter

       C. Matthew was to become a champion before he died

       D. After meeting Matthew, Rick regarded him as normal.

75.  The author wrote the passage with the purpose of ______.

       A. describing his unusual friendship with a disabled child

       B. showing his admiration towards the disabled child

       C. telling an experience of meeting a disabled child

D. expressing his pity to all the disabled children

C

       When we can see well, we do not think about our eyes often．It is only when we can not see perfectly that we come to see how important our eyes are．

       People who are nearsighted can only see things that are very close to their eyes．Many people who do a lot of close work, such as writing and reading, become nearsighted．Then they have to wear glasses in order to see distant things clearly．

       People who are farsighted face just the opposite problem．They can see things that are far away, but they have difficulty reading a book unless they hold it at arm’s length．If they want to do much reading, they must get glasses too．

       Other people do not see clearly because their eyes are not exactly the right shape．This, too, can be corrected by glasses．Some people’s eyes become cloudy because of cataracts．Long ago these people often became blind．Now, however, it is possible to operate on the cataracts and remove them．

       When night falls, colors become fainter to the eyes and finally disappear．After your eyes have grown used to the dark, you can see better if you use the side of your eyes rather than the centers．Sometimes, after dark, you see a small thing to one side of you, which seems to disappear if you turn your head in its direction．This is because when you turn your head, you are looking at the thing too directly．Men on guard duty sometimes think they see something moving to one side of them．When they turn to look straight at it, they can not see it any more, and they believe they were mistaken．However, this mistake happens because the center of the eye, which is very sensitive in daylight, is not as sensitive as the sides of the eye after dark．

64．We don’t know that our eyes are of great importance until ________．

       A．we think about our eyes      B．we cannot see clearly

       C．we wear glasses              D．we have to do much reading

65．According to the passage, a ________ is more likely to be nearsighted．

       A．student         B．doctor          C．guard           D．painter

66．People who are farsighted ________ ．

       A．can do a lot of close work without glasses

       B．can only see things that are very close to their eyes

       C．have difficulty reading a book if they hold it at arm’s length

       D．can correct their eyes by glasses

67．To see a small thing at night, it is better to look ________ ．

       A．with wide open eyes         B．with half shut or narrowed eyes

       C．straight at it                 D．in a slightly different direction

When Babbage was working at Cambridge, a new idea occurred to him. He wanted to construct a calculating machine to work out the solutions（解法）to maths problems not only with correctness but also with a speed beyond the power of any human mind. His machine could solve problems involving（涉及）long rows of figures in one continuous operation（运算）.

    In 1822 Babbage exhibited his invention and won a prize from the government. After that, he immediately started to work on a larger machine designed to solve more difficult problems. Although he received some money left by his father, the money was not enough to support his design. He wrote to the government about his plan and was given ￡2500 to start with, a sum worth much more in those days than it is now.

    Babbage continued his work in London for four years. Then his health broke down, and he had to take a long holiday abroad. When he returned to London in 1828, he was at the end of his resources. Many bills remained unpaid. His chief assistant and co-workers quarreled with him and left with many expensive tools. For one year no work was done. During this period, Babbage, whose mind was always active, suddenly thought of a completely new idea for the machine. He rushed to meet the government officials to explain his new idea. But this time, they were unwilling to help him. For eight years, they refused to say whether they wanted the machine or not, and their final answer was “No.”

    From 1828 to 1839, Babbage held the position of professor at Cambridge very successfully. But his greatest work was the unfinished calculating machine which stood covered in dust in his house. It was the beginning of the modern computer.

60．The machine Babbage designed would solve difficult maths problems _________.

   A．in one operation with few mistakes

    B．in more than one operation without any mistakes

    C．in more than one operation with slight mistakes

    D．in one operation without any mistakes

61．Babbage failed to continue his research work in 1828 mainly because _______.

   A．he was in poor health                B．he almost ran out of money

   C．his co-workers argued with him          D．he spent all his money on his bills

62．Babage explained his new idea to the government officials, expecting that _________.

   A．they would agree to his plan              B．they would pay for his new idea

   C．they would support him with money     D．they would exhibit his new design

63．From the passage, we can infer that __________.

    A．Babbage failed to be a famous scientist at Cambridge

    B．Babbage always had new ideas but gave them up easily

    C．Babbage always needed support from the government officials

    D．Babbage was the first designer of the modern computer

When 47-year-old volunteer Susan Boyle stepped onto the stage of Britain’s Got Talent and announced she was unemployed, had never been married and “never been kissed, actually”, few in the audience would have wondered why. This Ms Boyle, looking unfashionable, from a village in Scotland, shocked the three judges and the audience with the song I dreamed a dream from the musical Les Miserables on a show of Britain’s Got Talent, one of the hottest reality shows in Britain.

She couldn’t hide the awkwardness when walking to the center of the stage in a housedress, and everyone — including the judges — seemed laughing at her when she said she wanted to be as successful as Elaine Paige. As soon as she began singing, however, everyone in the auditorium fell silent, then rose within seconds to applaud her incredible voice as the celebrity judges sat open-mouthed, and remained standing to the end.

After her performance, one of the judges Piers Morgan said, “Without doubt that was the biggest surprise I’ve had in three years of this show. When you stood there everyone was laughing at you. No one is laughing now. That was amazing.” Actress Amanda Holden followed, “I’m so thrilled because I know that we everybody were against you. I honestly think that we were all being very cynical (愤世嫉俗的) and I think that’s the biggest wake up call ever.”

Susan obviously won over the hearts of millions around the world with sensation spreading across the Atlantic. Hollywood actors Ashton Kutcher and Demi Moore — who between them have nearly 1.5 million followers — speak highly of her. Kutcher posted a link to the video clip (片段). The Scottish talent made her live American debut via satellite connection on CBS’s The Early Show, doing an interview and singing live from her room. And she already accepted an invitation from talk show host Oprah Winfrey.

Now Boyle has become one of the world’s hottest celebrities. The video clip of her performance has been viewed more than 50 million times on Youtube, becoming a hit on the Internet.

We learn from the passage that Susan Boyle ______.

A. rose from a low social class

B. had an unhappy marriage

C. lived with a dog alone on a farm

D. won the championship in the Britain’s Got Talent show

At the beginning of the show, almost everybody ______.

A. looked forward to her wonderful performance

B. was attracted by her beautiful dress

C. looked down upon her

D. placed great hope on her

We can infer that ______ contributed most to her global popularity.

A. the judges   B. the Internet   C. the newspaper   D. the advertisement

The 4^th paragraph intends to tell us ______.

A. how Susan Boyle achieved her success

B. the comment made by American actor Ashton Kutcher

C. Susan Boyle’s influence in the USA

D. Oprah Winfrey’s invitation to Susan Boyle