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Each crank is made up of two crank webs joined by a common（） to which the bottom endbearing is fitted.
A . throw
B . crankshaft
C . crankpin
D . crosshead
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Each cylinder is closed at the top by a （）, made of a special heat-resistant steel.
A . cylinder liner
B . coupling flange
C . cylinder cover
D . piston crow
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My brother and I managed to ________ with each other and we soon made peace after a week’s quarrel.
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Our Chinese philosophy about food and health is that food can actually be made into a beneficial medicine for what we call food therapy.
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Select the correct answer (only one correct answer for each question, 3points for each question) 1) The price of good A goes up. As a result, the demand for good B shifts to the left. From this we can infer that:
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A lot of what we _________ is made from raw materials which are not renewable.
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We made him our monitor. The italicized part functions as a(n)_____________ in the sentence.
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This is the fifth time that we ______ each other.A. met B. have met C. had met D. meet
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When we explain how an object is made,how it is used and how it may change, we are writing a(n) ______.
A、description
B、narration
C、exposition
D、argumentation
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听力原文：W: I am sharing a room with three students this semester. Because we come from different countries, we are so different that we aren't getting along very well with each other.
M: We provide a homestay program too. You could choose an American family and live with them next semester.
W: What benefits can a homestay program provide？
M: There are lots of benefits. First, with an American family, the living environment will be relaxing and quiet. Second, you will learn a lot about American culture. Third, it's a perfect way to improve your English. Fourth, you may make good friends with your homestay family. Finally, they will also give you plenty of advice about living in the U. S.
W: Is it expensive to live with an American family？
M: The cost usually runs from $500 to $700 per month, and the contract period may be for a semester or for a year.
W: How should we get along with the host family？
M: Always ask your host family questions when you don't completely understand something, or if you aren't sure that you have understood. Interact frequently with all members of the house- hold and keep good relations with them. Try something new whenever you can, e. g. , food, customs, activities, holiday celebrations, etc.
W: If someone in my host family says something, either out of misunderstanding of or prejudice against my country, what should I do？
M: Don't be angry. Instead, be patient and tactfully educate them about the things they have misunderstood. And remember, always respect others' privacy.
(20)
A．She shares a room with three students and the rent is too high.
B．She isn't getting along well with her roommates.
C．The cost of living with an American family is too high.
D．She feels offended when someone in her host family is prejudiced against her.
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We share a_____purpose, so let's help each other.
A．common
B．ordinary
C．general
D．clever
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We select each year's respondents based on a number of criteria. The most important is their job categories.
A．Y
B．N
C．NG
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When a verbal message and a nonverbal message disagree with each other, most of the time we()
A.believe the verbal message
B.believe the nonverbal message
C.believe both of the two kinds of languages
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听力原文：M: Thomas is always late when we have a meeting. Maybe one of us should give him a ring each time.
W: That's really annoying. But I'll volunteer.
Q: What will the woman probably do？
(2)
A．Meet Thomas.
B．Follow Thomas.
C．Annoy Thomas.
D．Call Thomas.
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We （) that you haven’t made the payment yet.我们注意到您并未支付订单。
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Over sixty years ago, Dr. Hans Selye recognized the mind-body connection involved with stress, as all of his patients had similar physiological and psychological characteristics. Studies done with laboratory rats found that these same physical responses existed with animals when they were put under stress. He came to the conclusion that stress is "the non-specific response of the body to any demand placed upon it". He concluded that each demand made on the body is unique in that there is a definite response: when we are cold, we shiver; when we are hot we perspire; a great muscular effort increases the demands upon the heart and vascular system.
Selye claimed that it was not stress that harmed us, but distress, and distress occurred when we prolonged emotional stress and didn't deal with it in a positive manner. Selye was the pioneer in research into stress in the 1930s, and is internationally acknowledged as "the father of the stress field'. After publishing the first scientific paper to identify and define "stress" in 1936, Selye wrote more than 1700 scholarly papers and 39 books on the subject. At the time of his death 1982, his work had been cited in more than 362,000 scientific papers, in countless popular magazine stories, and in most major languages. Selye held three earned doctorates (M. D. , Ph. D. , D. Sc. ) plus 43 honorary doctorates, tie was an elected member of several dozen of the world's most recognized medical and scientific associations.
After completion of his academic and professional studies in Prague, Paris, and Rome, Selye received a Rockefeller Research Fellowship and accepted a position at Johns Hopkins University in Baltimore, Maryland. By 1945 he had become the first Director of tile Institute of Experimental Medicine and Surgery at the University of Montreal, Canada. He served in that position until his retirement in 1976. Subsequently he established the International Institute of Stress. He recognized that strain, or stress, plays a very significant nile in the development of all types of disease. Selye called the process whereby strain influences the body, the General Adaptation Syndrome. He concluded that there are three distinctive phases in this process: alarm, resistance, and exhaustion. He wrote of two types of stress: pleasant stress contributing to human well-being, and unpleasant stress contributing to disease. He is still by far the world's most frequently cited author on stress topics.
What does the passage mainly discuss？
A．Selye's professional life and achievements.
B．The origins of the word "stress".
C．Defining stress.
D．The father of the stress field.
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Many science reports discuss medical studies that test the effect of a new drug. Usually, a large number of people is divided into two groups. Each group takes a different substance. But no one knows which group is getting which substance. One group takes the medicine being tested. Another group takes what we call an inactive substance. Medical researchers call this substance a "placebo." The word "placebo" is Latin for "I shall please." Placebo pills(宽心丸)usually are made of sugar.
Using placebos to test drugs sometimes has a surprising result. Researchers say people taking the placebo often report improvements in their health. This is known as "the placebo effect"--pain that is eased or stopped by an inactive substance. In such testing, the drug must perform. better than the placebo to prove that it is effective.
Doctors have reported that the placebo effect can be used in treatment. For example, a doctor tells a patient that a new drug will stop the pain in his leg. The pill is only sugar. But the patient does not know that. He takes the pill and says his pain is gone.
Scientists are beginning to discover some physical reasons for this reaction in some people. They are learning that much of what people believe to be true comes from what the brain expects is going to happen. If the brain believes a drug will ease pain, the brain may begin physical changes in the body that can cause the expected effect. A recent examination of studies on drugs for depression found that placebos eased the depression about as well as the active drugs.
Other studies have explored the power of placebos. A study in Japan involved thirteen
people who reacted to the poison ivy (常青藤)plant. Poison-ivy causes red itchy sores(伤痕)on some people who touch it. Each person was rubbed on one arm with a harmless leaf, but was told it was poison ivy. Each person was then touched on the other arm with poison ivy, but was told it was a harmless leaf. All thirteen people developed a reaction on the arm where the harmless leaf touched their skin. Only two reacted to the poison ivy leaves.
Doctors and scientists worry that the use of placebos may not always be harmless. They say people can become victims of false doctors and others who use placebos to claim they can cure disease.
What do medical researchers usually use to make placebo pills？
A．Ivy leaves.
B．Harmless leaves.
C．Medicine being tested.
D．sugar.
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We usually [ ] hello [ ] each other when we meet
A;speak,to
B;say,to
C;to not,buying
D;not to,buying
必须有理由
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If we were asked exactly what we were doing a year ago，we should probably have to say that we could not remember. But if we had kept a book and had written in it an account of what we did each day, we should be able to give an answer to the question.
It is the same in history. Many things have been forgotten because we do not have any written account of them. Sometimes men did keep a record of the most important happenings in their country，but often it was destroyed by fire or in a war. Sometimes there was never any written record at all because the people of that time and place did not know how to write. For example, we know a good deal about the people who lived in China 4, 000 years ago, because they could write and leave written records for those who lived after them. But we know almost nothing about the people who lived even 200 years ago in central Africa because they had not learned to write.
Sometimes, of course, even if the people cannot write, they may know something of the past. They have heard about it from older people and often songs and dances and stories have been made about the most important happenings, and these have been sung and acted and told for many generations, for most people are proud to tell what their fathers did in the past. This we may call ？remembered history ” . Some of it has now been written down. It is not so exact or so valuable to us as written history is, because words are much more easily changed when used again and again in speech than when copied in writing. But if there are no written records, such spoken stories are often very helpful.
Which of the following is NOT suggested in the passage？
A.Written history is more reliable.
B.Written records play an important role in learning about history.
C.A written account of our daily activities helps to answer many questions.
D.Where there are no written records, there is no history.
Little is known about the central Africa 200 years ago because ______.A.there was nothing worth writing down at that time
B.people there ignored the importance of keeping a record
C.people there did not know how to write
D.the written records were perhaps destroyed by a fire
“ Remembered history” refers to ______.A.history based on a person’s imagination
B.stories of important happenings passed down from mouth to mouth
C.songs and dances about the most important events.
D.both B and C
“ Remembered history” is regarded as valuable only when ______.A.it is written down
B.No written account is available
C.it proves to be timely
D.People are interested in it
It is suggested that we could have learned more about our past if ancient people had ______.A.kept a written record of every past event
B.burnt their written records in wars
C.told exact stories of the most important happenings
D.made more songs and dances
请帮忙给出每个问题的正确答案和分析，谢谢！
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听力原文：W: It is said that you have made a new pretty girlfriend. And we're having a party tonight. Why not join us together with your girlfriend？
M: Well.. .I'm breaking up with Cathy.
Q: What does the man mean？
(17)
A．He has his leg broken.
B．He wants to join the party.
C．He parts with his girlfriend.
D．He gets along well with Cathy.
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You needn’t have made such a ____ about trifles.
A．mess
B．fuss
C．noise
D．fuse
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Only we hen he had caused an accident,（)that he had made a driving mistake.
A．A.he realized
B．B.does he realize
C．C.he then realized
D．D.did he realize
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When we talk about a plan, we usually need to discuss the schedule, the main activities involved, etc. During discussion, we should consider each other’s suggestions and make proper responses. It’s OK
A．When/Where shall we meet？
B．Do we have to ...？
C．Do you mean we shoul
D．..？
D．It’s OK.
此题为多项选择题。
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When we talk about a plan, we usually need to discuss the schedule, the main activities involved, etc. During discussion, we should consider each other’s suggestions and make proper responses. It’s OK to OFFER suggestions, like ________.
A．Shall w
E．..？
B．Why don’t w
E．..？
C．What we should do is ...？
D．The first thing to do is ...
E．How about ...？
