10、There are serious d          between the two political leaders over the problem.

9、The parents felt helpless when they found their son had been a          to playing computer games for long.

8、The English teacher laid particular s         on the need of reading aloud.

7、He worked very hard and e          made himself ill.

6、I passed my driving test at the first a          .

5、These measures are a           at reducing unemployment by 50%.

4、76．Jack Anderson. Jack graduated from the University of Trent with a degree in Economics two years ago. He would like an academic position.

77．Margaret Lillian. Margaret is 21 years old and would like a part-time position to help her pay her university expenses. She can only work in the evenings.

78．Alice Fingelhamm. Alice was trained as a secretary and has six years of experience. She is an excellent typist but does not know how to use a computer. She is looking for a full time position.

79．Peter Florian. Peter went to business school and studied computer and secretarial skills. He is looking for his first job and would like a full time position.

80．Lynne Nagata. Lynne, aged 65, once worked in a kindergarten. She is now a housewife, helping her daughter with her housework on weekdays. She is looking for a part-time job.

A．Needed: Full time secretary position available. Applicants should have at least 2 years experience and be able to type 60 words a minute. No computer skills required. Apply in person at United Business Ltd., 17 Browning Street.

B．Are you looking for a part time job? We require 3 part time shop assistants to work during the evening. No experience required. Applicants should be between 18 and 26. Call 366 - 76564 for more information.

C．Computer trained secretaries: Do you have experience working with computers? Would you like a full time position working in an exciting new company? If your answer is yes, give us a call at 457-896754.

D．Teacher Needed: Tommy's primary school needs 2 teacher/trainers to help with classes from 9 a.m. to 3 p.m. Applicants should have appropriate licenses. For more information, visit Tommy's primary school in Leicester Square No. 56.

E．Part Time work available: We are looking for retired adults who would like to work part time at the weekend. Responsibilities include answering the telephone and giving customers information. For more information contact us by calling 345-674132.

F．University positions open: The University of Cumberland is looking for 4 teaching assistants to help with homework correction. Applicants should have a degree in one of the following: Political Science, Religion, Economics or History. Please contact the University of Cumberland for more information.

3、While all my classmates seem to be crazy about a one-way ticket to Mars, I’d rather say Mars is totally unsuitable for human existence. People won’t have enough food supplies there, and the terrible environment would make it impossible for them to live a long life. Besides, the journey won’t be safe. Can anybody explain to me just why people would go to Mars, never to return?

Steve Minear, UK

Here are the things you can think of: the desire to explore a foreign and unique environment, the excitement of being the first humans to open up a new world, the expectation of fame and glory…For scientists there is another reason. Their observations and research will probably lead to great scientific achievements.

Donal Trollop, Canada

There are already too many people on the Earth. I think that sometime before the end of the century, there will be a human colony(殖民地)on Mars. It will happen when people finally realize that two-way trips to the red planet Mars are unnecessary. Most of the danger of space Flight is in the launches(发射) and landings. Cutting the trip home would therefore reduce the danger of accidents, save a lot of money, and open the way to building an everlasting human settlement on another world.

Enough supplies can be sent on ahead. And every two years more supplies and more people will be sent to the new colony. Mars has all the materials for a colony to produce or make everything it needs, and Mars is far more pleasant than the other planets in the outer space.

Paul Davies. USA

72. The main purpose of Steve Minear’s writing is     .

A. to report his classmates’ discussion

B. to invite an answer to his question

C. to explain the natural state of Mars

D. to show his agreement on going to Mars

73. Which of the following best states Donal Trollop’s idea?

A. There is a plan to send humans to Mars.

B. There are many reasons for going to Mars.

C. Scientists become famous by doing research on Mars.

D. It is possible to build an Earth-like environment on Mars.

74. Paul Davies points out that      .

A. humans need only a one-way ticket to Mars.

B. two-way trips to Mars will be made safe soon

C. it is easy to reduce the danger and cost of flights to Mars

D. it is cheap to build an everlasting human settlement on Mars

75. What does Paul Davies think of human existence on Mars?

A. Humans will have to bring all they need from the Earth.

B. Humans will find Mars totally unsuitable for living.

C. Humans can produce everything they need.

D. Humans can live longer in the colony on Mars.

2、What do you hear? Sounds all around you! You can hear the sound of traffic, the wind in the trees, a dog barking, your own breathing and lots of other things.

But what is sound? Sound happens when something vibrates(振动)or shakes. We can make something vibrate by hitting it. Try this experiment. Put your ruler on your desk so that part of it sticks out(伸出)over the edge . Put your hand on the part of the ruler that is on the desk. Now pull the part that is sticking out over the edge down, and then let it go. The part you let go will vibrate. It will move up and down very quickly, and give out sound.

The part of the ruler sticking out over the edge of the desk produced the sound. If you make that part longer, you will hear a lower sound. When you shorten it, you will hear a higher sound. Why does this happen?

When you shorten the ruler, it will vibrate more quickly. When something vibrates more quickly it produces a higher sound. If you lengthen the ruler, it will vibrate more slowly. When something vibrates more slowly, it produces a lower sound.

61. How does sound happen?

A. When something vibrates.                          B. When something shakes.

C. When a ruler is put at the edge of the desk.  D. A and B.

62. We can hear a        sound if we make the part of the ruler sticking out over the edge of the desk longer.

A. higher              B. lower                  C. strong                D. nice

63. The word “lengthen” in the passage means“        ”.

A. 加长                     B. 缩短                  C. 敲击                       D. 摇动

64．The best title of the passage is“          ”.

A. An Experiment                                    B. A Way of Making Sound

C. Sounds Are Around Us                        D. Sounds

1、The researcher is so designed that once ________ nothing can be done to change it

A. begins            B. having begun          D. beginning    D. begun