Itwasadarkandcoldnight.Thecard-优题课

Two scientists in California now think they can find out a person’s real age.Jeffery Bada and Patricia Masters do chemical tests on teeth.When we are born the amino acids（氨基酸）in our teeth are in one form.Then，as we grow older these amino acids change into a second form.Every year，one thousandth of the amino acids changed.So，by testing just one tooth and counting the number of amino acids in each form，Bada and Masters can work out a person’s age.They tested a tooth from the body of an Eskimo（爱斯基摩人）woman who died 1 600 years ago.From the appearance of her body，she was between 50 and 60 years old when she died.The tooth test put her age at 53.Then the Russian Government sent them a tooth from an old man in Georgia.The tooth said she was 99.Her real age was 96.The Russians are now hoping to send more teeth，from the very old people without birth certificates（出生证明书）.But there are problems.Some of the centenarians（百岁老人）have lost all their teeth.The others want to keep their teeth until they drop out naturally.So the Russian Government and the American scientists have to wait and hope.
61.Jeffery Bada and Patricia Masters believe that they can tell a person’s age according to_______.
A.an experiment on his bone
B.the shape and condition of his teeth
C.a test on the amino acids within his body
D.the changing form of amino acids in his teeth
62.According to the passage，which of the following statements is true?
A.The amino acids in an adult’s teeth may differ from those in a baby’s.
B.The number of amino acids in a 20-year-old man is different from that when he was seven.
C.Amino acids in one teeth changes without affecting their forms.
D.Scientists now can tell how long a person will live by testing his teeth.
63.Why are the two scientists asked to find out some very old Russians’ age?
A.Because the Government wants to know how long these old people can live.
B.Because they have no birth certificates.
C.Because people who have tooth problems tend to live longer.
D.Because the Government wants to know their dates of birth and death.
64.In order to find out the exact age of some people over 100，both the Russian Government and American scientists_______.
A.should wait until all of them die
B.should pull out one of their teeth
C.have to wait for their teeth to drop out naturally
D.want to have their teeth pulled out
65.The central idea of the passage is_______.
A.the relationship between people’s teeth and ages
B.the relationship between amino acids and teeth
C.the contradiction（矛盾）between scientists and patients
D.the contradiction between the Government and the scientists

America is growing older. Fifty - eight years ago, only 4 out of every 100 people in the United States were 65 or older. To day, 10 out of every 100 Americans are over 65. The aging of the population will affect（影响）American society in many ways—education, medicine, and business. Quietly, the graying of America has made us a very different society—one in which people have a quite different idea of what kind of behavior（行为） is suitable（合适）at various , ages.
　　A person s age no longer tells you anything about his/her social position, marriage or health. There’s no longer a particular year in which one goes to school or goes to work or gets married or starts a family. The social clock that kept us on time and told us when to go to school, get a job, or stop working isn’t as strong as it used to be. It doesn’t surprise us to hear of a 29 - year - old university president or a 35 - year -old grandmother, or a 70 year - old man who has become a father for the first time. Public ideas are changing.
　　Many people say, “I am much younger than my mother— or my father— was at my age. ”No one says“Act your age” any more. We’ve stopped looking with surprise at older people who act in youthful ways.
　　67．It can be learnt from the text that the aging of the population in America ________ .
　　A. has made people feel younger
　　B. has changed people’s social position
　　C. has changed people’s understanding of age
　　D. has slowed down the country’s social development
　　68．The underlined word “one” refers to ________ .
　　A. a society　　　　　　　　　　　B. America
　　C. a place　　　　　　　　　　　　D. population
　　69．“Act your age” means people should ________ .
　　A. be active when they are old
　　B. do the right thing at the right age
　　C. show respect for their parents young or old
　　D. take more physical exercise suitable to their age
　　70．If a 25 - year - old man becomes general manager of a big firm, the writer of the text would most probably consider it ________ .
　　A. normal　　　　　　　　　　　　B. wonderful
C. unbelievable　　　　　　　　　　D. unreasonable

　The following are four forms about medicine. How to use the medicine is very important. Never take any by mistake.
　　1）Take the medicine with water, followed by one tablet every eight hours, as required. For further night - time and early morning, take two tablets at bedtime. Do not take more than six tablets in 24 hours. For Children six to twelve years old, go to your doctor for advice.　Reduce dosage if nervousness, restlessness or sleeplessness takes place.
　　2）Each pill of the medicine taken three times every day for fourteen years old. As usual, a pill 6∶00 a. m., before breakfast, one before 11∶00 and one before sleep. Not for children under six years old and old persons with heart attack.
　　3）The medicine for a person with a fever. Once two pills a day before sleep for adult. Not take the medicine without fever. Half for Children under 12 years old. Children with a high fever, go to see a doctor.
　　4）The medicine taken three times a day, once five pills for adult with a cold. Half of the pills for children 10 years old. Take the medicine before breakfast, lunch, supper or before sleep.
　　60．Obviously a kind of medicine can’t be proper for ________, judging from the information.
　　A. children over twelve years old
　　B. some old persons with a fever
　　C. some old persons with heart attack
　　D. neither adults nor heart attack
　　61．When a person has a cold, he had better ________ .
　　A. have about more than fourteen pills a day
　　B. have twice a day
　　C. have four times a day
　　D. have nine pills a day
　　62．How many kinds of medicine are used for the children six years old?
　　A. All of them．
　　B. Three kinds of medicine.
　　C. Two kinds of medicine.
D. Almost not any medicine.

　　From the very beginning, Martin felt that he was bound up with（与……紧紧地在一起）his lovely little patient. One day, following some tests , Betty gave the doctor a big hug（拥抱）.
　　A few months later the doctor removed not only the tumour（肿瘤）, but also the entire lower left side of Betty’s gum（牙龈）and jawbone. Because Betty was so young, Martin was hopeful that her jawbone might regenerate.
　　Within three months, Betty’s tumour grew as large as an orange, changing the natural appearance of the left side of her small, delicate （ =" thin;" not strong）face. Soon she couldn’t even close her mouth, and as her eating problems worsened, Betty ‘s weight dropped from 20 kilos to 15. Martin knew from experience that it might invade the brain.
　　The only other possibility was thorough radiation therapy （放射疗法）. Night after night, Betty's father gave her injection, but the tumour remained as big as ever. Then one evening. Morgan noticed that the tumour had begun to change. It was actually becoming smaller! For two months her tumour appeared to be going away for ever. In the coming months, Betty’s tumour continued to appear. She was able to eat solid food once again. Her jawbone was regenerating. The tumour was gone.
　　67．What do you think the underlined word regenerate means? It means “________”.
　　A. lose one’s life
　　B. give a new life to
　　C. be made by hand
　　D. pass on from one generation to another
　　68．If Betty’s jawbone didn’t regenerate, the doctors ________ .
　　A. would rebuild her jaw
　　B. would continue the treatment
　　C. would use new medicine
　　D. could do nothing else
　　69．If the brain should be invaded, the result would ________.
　　A. prevent her growth
　　B. reduce her weight
　　C. cause her brain damaged
　　D. affect her eyesight
　　70．What did the doctors do two months later?
　　A. They continued their observations.
　　B. They gave up the operation on Betty.
　　C. They found out what caused Betty’s strange disease.
D. They declared that Betty’s strange disease was cured.

A film was at the Circle Five Ranch to film a Marlboro commercial. This is in 1868, before they prohibited cigarette ads from American television. Darrell Winfield was watching the crew set up the equipment. The scene included an actor crossing a river on horseback, but when the time came to shoot, the man was too drunk to ride. Someone from the crews saw Winfield and asked him if he would ride the horse for 50. “Hell, ” said Winfield, “for 50 bucks, I'll jump that damn horse over the moon!”
　　To people in many countries, Winfield is just a familiar but nameless face, a simple cowboy with an advertising message about a connection between the West and a brand of cigarettes. Few people know that he is advertising message about a connection between the West and a brand of cigarettes. Few people know that he is 55, a family man who’s been married to the same woman for 37 years and has 5 children and 7 grandchildren. Most surprisingly, he’s a real, working cowboy who raises horses in his ranch in Wyoming.
　　One of the most striking things about the Marlboro Man is that success hasn’t changed him much. He says that complete strangers sometimes come up to him and say, “I’ve met you. know you from somewhere. ”Whenever it happens, he says that he gets embarrassed.
　　60．Which of the following statements is true?
　　A. Cigarette ads were prohibited in America.
　　B. Cigarette ads are prohibited on television in America.
　　C. Marlboro commercial was prohibited on television.
　　D. Marlboro commercial was produced on television.
　　61．What does the word“prohibited”in the first paragraph mean?
　　A. broadcast　　　　　　　　　　　B. forbidden
　　C. produced　　　　　　　　　　　D. provided
　　62．When they filmed the ad, ________.
　　A. Winfield was too drunk.
　　B. The actor in the ad was too drunk.
　　C. Winfield was setting up the equipmet.
　　D. Winfield was riding a horse.
　　63．From the passage, we know that Winfield was ________.
　　A. an ordinary man
　　B. a superstar
　　C. an actor
　　D. a rich man
　　64．When people recognized Winfield, he felt________.
　　A. excited　　　　　　　　　　　 B. happy
　　C. interested　　　　　　　　　　 D. uncomfortable
　　65．A train car moves along a long straight track. The graph （曲线） shows the position as a function of time for this train. The graph shows that ________.
　　A. slows down all the time
　　B. speeds up all the time
　　C. speeds up part of the time and slows down part of the time
　　D. moves at a constant speed
　　66．As the diagram shows, there is a fixed superconductor ring, on the right of which lies a bar magnet. There is no electric current. When the magnet is moved to the right, because of electro-magnetic, induction, a certain electric current is produced. Thus the direction of the electric current is________ .
　　A. as indicated by the arrowhead in the diagram. When the magnet is moved away, the electric current will soon disappear.
　　B. as indicated by the arrowhead in the diagram. When the magnet is moved away, the electric current will still remain.
　　C. in the opposite direction. When the magnet is moved away, the electric current will soon disappear.
D. in the opposite direction. When the magnet is moved away, the electric current will still remain.

A．He was a nice and clever man.	B．He liked to work very hard.
C．He was good at driving	D．He was not an honest person.