奥鹏教育兰州大学《大学英语（3）》平时作业3

奥鹏兰州大学平时在线作业

《大学英语（3）》21春平时作业3

Australia is _______ English-speaking country．
A:a
B:an
C:the
D:／
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It is not easy to learn English well, but if you _____ ,you will succeed in the end.
A:hang up
B:hang about
C:hang on
D:hang onto
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I wonder if I can ask him__ time.
A:four
B:fourth
C:.thefourth
D:afourth
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. These three English novels are for you. The rest _______ for the other students in your class.
A:were
B:is
C:are
D:was
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According to the passage, immigrants choose to settle in the U.S., dreaming that _____________.
A:they will make a fortune overnight there
B:they can be more competitive in business
C:they can start profitable businesses there
D:they will find better chances of employment
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Afetr dinner he gave Mr. Richardson ________ride to ________Capital Airport.
A:the,a
B:athe
C:/,a
D:/,the
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If you make a cat angry, it may _________ you.
A:tear
B:beat
C:spit
D:scratch
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Statuses are marvelous human inventions that enable us to get along with one another and to determine where 　we "fit " in society. As we go about our everyday lives, we mentally attempy to place people in terms of their statuses. For example, we must
A:determine whether a person is fit for a certain job'
B:behave appropriately in relation to other people
C:protect ourselves in unfamiliar situations
D:make friends with other people
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He went to the market and bought __eggs and some meat.
A:threedozenof
B:threedozen
C:threedozens
D:threedozensof
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It is ___world of wonders, _____world where anything can happen.
A:a.the
B:a,a
C:the,a
D:/,/
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The boys spent the whole morning _______ possible answers to the question.
A:discuss
B:anddiscussing
C:discussing
D:anddiscussed
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．How many books do you have？ I have _______ book．That's _______ English book
A:a an
B:a one
C:one an
D:one one
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They made him _______ king．
A:a
B:the
C:an
D:／
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Jumping out of ____airplane at ten thousand feet is quite _____exciting experience.
A:/,the
B:/,an
C:an.An
D:the,the
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Without __________ there can be no ___________.
A:quantity…quality
B:quantity…qualities
C:quantities…quality
D:quantities…qualities
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Passage 2 Sam and Joe were astronauts. There was once a very dangerous trip and the more experienced astronauts knew there was only a small chance of coming back alive (活着). Sam and Joe, however, thought it would be exciting though a little 奥鹏兰州大学平时在线作业dangerous. were the best men for the job, they said to the boss. There may be problems, but we can find the answers. Theyre the last people Id trust, thought the boss. But all the other astronauts have refused to go. Once they were in space, Joe had to go outside to make some repairs. When the repairs were done, he tried to get back inside the spaceship. But the door was locked. He knocked but there was no answer. He knocked again, louder this time, and again no answer came. Then he hit the door as hard as he could and finally a voice said, Whos there? Its me! Who else could it be? shouted Joe. Sam let him in all right but you can imagine that Joe never asked to go on a trip with Sam again!
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Passage 1 Can trees talk? Yes, but not in words. Scientists have reason to believe that trees do communicate with each other. Not long ago, researchers learned some surprising things. First a willow tree attacked in the woods by caterpillars (毛虫) changed the chemistry of its leaves and made them taste so terrible that they got tired of the leaves and stopped eating them. Then even more astonishing, the tree sent out a special smell—a signal causing its neighbors to change the chemistry of their own leaves and make them less tasty. Communication, of course, doesnt need to be in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds and animals use a whole vocabulary of songs, sounds, and movements. Bees dance their signals, flying in certain patterns that tell other bees where to find nectar (花蜜) for honey. So why shouldnt trees have ways of sending message?
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Do you find getting up in the morning so difficult that its painful? This ## called laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy ## .　　During the hours when you ## your work you may say that youre hot. Thats true. The time of day when you feel most ## is when your cycle of body temperature is ## its peak. For some people the peak comes during the forenoon. For ## it comes in the afternoon or evening. No one has discovered why this is so, but it ## such familiar monologues (自言自语) as: Get up John! Youll be late for work again! The possible explanation to the trouble is that John is at his ## and energy peak in the evening, ## family quarrelling ends when husbands and wives realize ## these energy cycles mean, and which cycle each member of the ## has.　　You cant change your energy cycle, but you can learn to make your life ## it better. ## can help, Dr. Kieitman believes. Maybe youre sleepy in the evening but feel you must ## late anyway. Counteract (对换) your cycle ## by habitually staying up late than you want to.
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（英译汉）Although no longer slaves after the Civil War, American blacks took no significant part in the life of white America except as servants and labours.
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（根据阅读理解Passage2回答问题）What do you think is the life of astronauts like?
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（根据阅读理解Passage1回答问题）How do birds communicate with each other?
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Instructions: Mobile phones and the Internet play an important part in the way in which people relate to one another socially. Is this a positive or negative development? You should write at least 150 words . 手机和互联网在人们的社会关系里扮演着重要的角色。这种发展是积极的还是消极的？用英语写出一篇不少于150字的短文。题目自拟。
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（汉译英）年复一年，女人在女儿、妻子、母亲中熬白了头发，可是回首往事时，依然是那句朴素的我愿意。
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