Lionsareopportunists.Theyprefe-优题课

A small dog should be belly-up after eating a handful M＆M’s, at least according to conventional wisdom. But watching “Moose”, a friend’s five-pound Chihuahua, race around a living room after his sweet snack makes one wonder: Is chocolate truly poisonous to dogs?
Dogs and humans have similar tastes. But unlike humans, our companions experience dangerous effects from eating chocolate — it can poison them and in some cases is fatal. Chocolate’s danger to dogs depends on its quality.
Chocolate is processed from the bitter seeds of the cocoa tree, which contain a family of compounds known as methylxanthines（一种衍生物）. This class of substances includes caffeine and the related chemical theobromine(可可碱). Chocolate contains a significant amount of theobromine and smaller amounts of caffeine. These chemicals can cause a dog’s heart to race up to twice its normal rate, and some dogs may run around as if “they drank a gallon of espresso,” according to Hackett.
Dogs are capable of handling some chocolate, but it depends on the animal’s weight and the type of chocolate it eats. Unsweetened baking chocolate contains more than six times as much theobromine as milk chocolate, although amounts vary between cocoa beans as well as different brands of chocolate. Less than four ounces of milk chocolate is potentially fatal for Moose and other small dogs.
Around every confection-centered holiday — Valentine’s Day, Easter and Christmas — at least three or four dogs are hospitalized overnight in the animal medical center at Colorado State. But in 16 years, Hackett has seen just one dog die from chocolate poisoning, and he suspects it may have had an underlying disease that made it more exposed to chocolate’s heart-racing effect.
1. The underlined expression “belly-up” probably means______.
A. dead B. poisonous C. running around D. having a headache
2. All of the following are true EXCEPT______.
A. chocolate’s danger to dogs depends on its quantity and quality
B. people buy lots of chocolate around Valentine’s Day
C. an ounce of unsweetened baking chocolate is safe for Moose
D. there must be some theobromine or caffeine in espresso
3. What can we learn about Hackett?
A. He is an animal doctor. B. He is a pet shop owner.
C. He is the owner of Moose D. He is a doctor in a small hospital.
4. It can be inferred from the passage that Hackett believes that__________.
A. chocolate is truly deadly to dogs
B. it’s OK to give chocolate to a big dog
C. pets are usually ignored around confection-centered holidays
D. a healthy dog probably could survive a chocolate poisoning
5. The passage is mainly about__________.
A. the poisoning of Moose
B. the compounds of different chocolates
C. a handful M＆M’s chocolate is poisonous
D. the relation between methylxanthines and chocolate poisoning

Are some people born clever，and others born stupid? Or is intelligence developed by our environment and our experience? Strangely enough, the answer to these questions is yes. To some extent our intelligence is given to us at birth, and no amount of education can make a genius out of a child born with low intelligence. On the other hand, a child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits of person’s intelligence are fixed at birth, whether or not he reaches those limits will depend on his environment. This view, now held by most experts, can be supported in a number of ways.
It is easy to show that intelligence is to some extent something we are born with. The closer the blood relationship between two people, the closer they are likely to be intelligent. Thus if we take two unrelated people at random from population, it is likely that their degree of intelligence will be completely different. If, on the other hand, we take two identical twins, they will very likely to be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar intelligence, and this clearly suggests that intelligence depends on birth.
Imagine now that we take two identical twins and put them in different environments. We might send one, for example, to a university and the other to a factory where the work is boring. We would soon find differences in intelligence developing, and this indicates that environment as well as birth plays a part. This conclusion is also suggested by the fact that people who live in close contact with each other, but who are not related at all are likely to have similar degree of intelligence.
46. The writer is in favor of the view that man’s intelligence is given to him______.
A. at birth
B. through education
C. both at birth and through education
D. neither at birth nor through education
47. If a child is born with low intelligence, he can______.
A. become a genius
B. still become a genius if he should be given special education
C. reach his intelligence limits in rich surroundings
D. not reach his intelligence in his life
48. In the second paragraph, the underlined sentence means“if we ___________.”
A. pick any two persons
B. take out two different persons
C. choose two persons who are relative
D.choose two persons with different intelligence
49. The example of the twins going to a university and to a factory separately shows______.
A. the importance of their intelligence
B. the role of environment on intelligence
C. the importance of their positions
D. the part that birth plays
50. The best title of the passage can be______.
A. Surroundings B. Intelligence
C. Dependence on Environment D. Effect of Education

A study of art history might be a good way to learn more about a culture than is possible to learn in general history classes. Most typical history courses concentrate on politics, economics, and war. But art history focuses on much more than this because art reflects not only the political values of a people, but also religious beliefs, emotions, and psychology. In addition, information about the daily activities of our ancestors — or of people very different from our own — can be provided by art. In short, art expresses the essential qualities of a time and a place, and a study of it clearly offers us a deeper understanding than can be found in most history books.
In history books, objective(客观的) information about the political life of a country is presented; that is, facts about politics are given, but opinions are not expressed. Art, on the other hand, is subjective(主观的): it reflects emotions and opinions. The great Spanish painter Francisco Goya was perhaps the first truly “political” artist. In his well-known painting The Third of May, 1808, he criticized the Spanish government for its misuse of power over people. Over a hundred years later, symbolic images were used in Pablo Picasso’s Guernica to express the horror of war. Meanwhile, on another continent, the powerful paintings of Diego Rivera, Jose Clemente Orozco, and David Alfaro Siqueiros — as well as the works of Alfredo Ramos Martinez — depicted these Mexican artists’ deep anger and sadness about social problems.
In the same way, art can reflect a culture’s religious beliefs. For hundreds of years in Europe, religious art was almost the only type of art that existed. Churches and other religious buildings were filled with paintings that depicted people and stories from the Bible. Although most people couldn’t read, they could still understand biblical stories in the pictures on church walls. By contrast, one of the main characteristics of art in the Middle East was (and still is) its absence of human and animal images. This reflects the Islamic belief that statues are unholy(不圣洁的).
1. More can be learned about a culture from a study of art history than general history because art history ____________.
A. shows us the religious beliefs and emotions of a people in addition to political values
B. provides us with information about the daily activities of people in the past
C. gives us an insight into the essential qualities of a time and a place
D. all of the above
2. Art is subjective(主观的) in that _________.
A. a personal and emotional view of history is presented through it
B. it can easily rouse our anger or sadness about social problems
C. it will find a ready echo in our hearts
D. both B and C
3. Which of the following statements is true according to the passage?
A. Unlike Francisco Goya, Pablo Picasso and several Mexican artists expressed their political opinions in their paintings.
B. History books often reveal the compilers’ political views.
C. Religious art remained in Europe for centuries the only type of art because most people regarded the Bible as the Holy Book.
D. In the Middle East even today you can hardly find any human and animal figures on palaces or other buildings.
4. The passage mainly discusses __________.
A. the difference between general history and art history
B. the making of art history
C. what we can learn from art
D. the influence of artists on art history
5. It may be concluded from this passage that __________.
A. Islamic artists have had to create architectural decoration with images of
flowers or geometric forms
B. history teachers are more objective than artists
C. it is more difficult to study art history than general history
D. people and stories from the Bible were painted on churches and other buildings in order to popularize the Bible

Although April did not bring us the rains we all hoped for, and although the Central Valley doesn’t generally experience the sound and lightning that can go with those rains, it’s still important for parents to be able to answer the youthful questions about thunder and lightning.
The reason these two wonders of nature are so difficult for many adults to explain to children is that they are not very well understood by adults themselves. For example, do you know that the lightning we see flashing down to the earth from a cloud is actually flashing up to a cloud from the earth? Our eyes trick us into thinking we see a downward motion when it’s actually the other way round. But then, if we believed only what we think and we see, we’d still insist that the sun rises in the morning and sets at night.
Most lightning flashes take place inside a cloud, and only a relative few can be seen jumping between two clouds or between earth and a cloud. But, with about 2,000 thunderstorms taking place above the earth every minute of the day and night, there’s enough activity to produce about 100 lightning strikes on earth every second.
Parents can use thunder and lightning to help their children learn more about the world around them. When children understand that the light of lightning flashing reaches their eyes almost at the same moment, but the sound of the thunder takes about 5 seconds to travel just one mile, they can begin to time the interval(间隔) between the flash and the crash to learn how close they are to the actual spark(闪光).
36. According to the author, in the area of the Central Valley, ___________.
A. rains usually come without thunder and lightning
B. it is usually dry in April
C. children pay no attention to the two natural wonders
D. parents are not interested in thunder and lightning
37. We believe that lightning is a downward motion because ___________.
A. we were taught so by our parents from our childhood
B. we are taken in by our sense of vision
C. it is a common natural sight
D. it is a truth proved by science
38. What is TRUE about lightning according to the passage?
A. Only a small number of lightning flashes occur on earth.
B. Lightning travels 5 times faster than thunder.
C. Lightning flashes usually jump from one cloud to another.
D. There are far more lightning strikes occurring on earth than we can imagine.
39. The underlined word “activity” is most closely related to the word(s) _______________.
A. “cloud” B. “lightning strikes” C. “lightning flashes” D. “thunderstorms”
40. It can be concluded from the passage that____________.
A. we should not believe what we see or hear
B. things moving downward are more noticeable
C. people often have wrong ideas about ordinary phenomena (现象)
D. adults are not as good as children in observing certain natural phenomena

　　More than four out of five people admit to telling little white lies at least once a day and the preferred way of “being economical with the truth” is to use technology such as cell phones, texts and e-mails, a survey last Thursday said.
　　The research by UK pollsters 72 Point found that “techno-treachery(高科技说谎)” was wide-spread with nearly 75 percent of people saying gadgets made it easier to fib(撒小谎).
　　Just over half of respondents(被调查者) said using gadgets made them feel less guilty when telling a lie than doing it face to face.
　　The workplace was a favorite location for fibbing with 67 percent of the 1,487 respondents admitting they had lied at work.
　　The top lie was pretending to be ill (43 percent) followed by saying work had been completed when it hadn’t (23 percent). Worryingly for bosses 18 percent said they lied to hide a big mistake.
　　But, employers were not the only ones on the receiving end of dishonest statements. Just over 40 percent of the respondents said they had lied to their families or partners.
　　Key topics to lie about were: buying new clothes or the cost of them (37 percent), how good someone looked in something (35 percent), how much they had eaten (35 percent) and drunk (31 percent) and how much they weighed (32 percent).
1. The underlined phrase “being economical with the truth” probably means ________.
A. telling lies B. making apologies C. feeling guilty D.admitting mistakes
2. It can be inferred from the passage that ___________.
A. employers sometimes lie to their employees, too
B. 75% of people have ever lied to someone
C. without gadgets, people may feel more pressure when telling white lies
D. more people lie to their family than to their bosses
3. Which of the following is NOT TRUE according to the passage?
A. Cell phones make people more likely to lie.
B. Some people might lie to their bosses when they are not doing their work well.
C. 40% of employers admit that they have lied to their families or partners.
D. Nearly 1,500 people were questioned in the survey.
4. According to the passage, in which of the following situations are you most likely to lie?
A. You are going to spend the night at your friend’s, which your parents won’t allow.
B. Your friend is wearing a new dress and asks you how you find it.
C. You are a little too fat, and you’re trying to tell your friend how heavy you are.
D. You want to ask your boss for a sick leave, although you are not ill.
5. The main idea of the passage is that __________.
A. people are getting more likely to lie
B. gadgets are seen as the best way to tell white lies
C. most people tell white lies at the workplace
D. 18% of people lie to their bosses

A．playing and killing	B．sleeping and resting
C．eating and sleeping	D．playing and sleeping

A．Powerful Lions	B．Lions at Work and Play
C．Lions, Social Cats	D．Lions, Skilled Hunters