兰州大学《大学英语（3）》平时作业1

奥鹏兰州大学平时在线作业

《大学英语（3）》21春平时作业1

The students must finish the test in____.
A:threequartersofanhourtime
B:threequarter'sofanhourtime
C:threequartersofanhour'stime
D:threequarters'ofanhour'stime
答案问询微信：424329

. The author of the book _________ that women can live longer than men.
A:says
B:issaying
C:saying
D:wassaid
答案问询微信：424329

I can’t remember when exactly the Robinsons left _____city ,I only remember it was ______ Monday.。
A:the,the
B:a,the
C:a,a
D:the,a
答案问询微信：424329

The author is concerned about the fact that American kids ___________.
A:are involved less and less in household work
B:are spending more and more time watching TV
C:are engaged in more and more structured activities
D:are increasingly neglected by their working mothers
答案问询微信：424329

_______ old lady with white hair spoke _______ English well at _______ meeting．
A:An an a
B:The ／ an
C:The ／ a
D:The ／ the
答案问询微信：424329

The sun is 93_________ away from the earth.
A:millionmiles
B:millionsmiles
C:millionsmile
D:millionmilesbeing
答案问询微信：424329

__________ is the richest man in this town?
A:Whom do you think
B:Who do you think
C:Do you think who
D:Who you think
答案问询微信：424329

_______ apple a day keeps the doctors aw ay．
A:The
B:．A
C:An
D:Two
答案问询微信：424329

You'll have to spend __writing your report here.
A:onedayortwodays
B:onedayortwo
C:adayortwo
D:twodaysorone
答案问询微信：424329

While he was investigating ways t improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color.
A:a,/
B:a,the
C:/,the
D:the,a
答案问询微信：424329

The book tells ____life story of John Smith ,who left _______school and worked for a newspaper at the age of 16.
A:the,the
B:a,the
C:the./
D:a,/
答案问询微信：424329

Why do the two “explanations (Para. 3, Line 1) worry Asian-Americans?
A:They are afraid that they would again be isolated from American society in general
B:People would think that Asian students rely on their parents for success.
C:Asian-Americans would be a threat to other minorities.
D:American academic achievements have take
答案问询微信：424329

On May 5,2005,at ___World Table Tennis Championship ,Kong Ling hui and WangHao
won the gold medal in men’s with ____score of 4:1.
A:a,a
B:/the
C:a,/
D:.the,a
答案问询微信：424329

My brother changed his major at college several times and he never ________ any one very long.
A:stuckto
B:keptback
C:letalone
D:madeway
答案问询微信：424329

__people were sent there to help fight against the flood.
A:Threescoresof
B:Threescoreof
C:Threescore
D:Threescores
答案问询微信：424329

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 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!
答案问询微信：424329

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,奥鹏兰州大学平时在线作业 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?
答案问询微信：424329

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.
答案问询微信：424329

（根据阅读理解Passage2回答问题）What do you think is the life of astronauts like?
答案问询微信：424329

（根据阅读理解Passage1回答问题）How do birds communicate with each other?
答案问询微信：424329

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。
答案问询微信：424329

（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.
答案问询微信：424329

（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。
答案问询微信：424329