第三部分：阅读理解（共20小题；每小题2分，满分40分）
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
Two American scientists told the people in industrial nations that they would be much healthier if they ate more of the same kind of foods eaten by humans living more than 10,000 years ago.
The scientists say that the human body has changed very little since human first appeared on earth, but the way we live has changed greatly. Our body has not been able to deal with these changes in life style and this has led to new kinds of sicknesses. These new sicknesses were not known in ancient times. So they are called “diseases of civilization”. Many cancers and diseases of the blood system, including heart attacks and strokes（中风） are examples of such diseases.
Scientists noted that early stone-age people used very little alcohol or tobacco, probably none. Ancient people also got a great deal of physical exercise, but a change in food is one of the main differences between life in ancient times and life today.
Stone-age people hunted wild animals for their meat, which had much less fat than farm animals. They also ate a lot of fresh wild vegetables, and fruits. They did not use milk and other dairy products, and they made very little use of grains. But today, we eat a large amount of dairy products and grain foods. We eat six times more salt than stone-age people. We eat more sugar. We eat twice as much fat but only one third as much protein and much less vitamin C.
People today probably do not want to live as people thousands of years ago did, but scientists say that we would be much healthier if we ate as those ancient people did, cutting the amount of fatty, salty and sweet foods.
56.The people in industrial nations would be much healthier if they ate ______.
A. more foods as humans living 10,000 years ago did
B. as humans living 10,000 years ago ate
C. . more kinds of food eaten by people living over 10,000 years ago
D. more of the same kinds of foods eaten by people over 10,000 years ago
57. New kinds of sicknesses have been found because ______
A. the human body has changed compared with human first appearing on earth
B. the way we live has changed a little
C. our body can’t deal with the changes in life style
D. the way we live today are improper for the human body
58. What is the main cause mentioned in the article why people suffer from a lot of new sicknesses?
A. Ancient people did a great deal of physical exercise.
B. People today have a lot of alcohol.
C. . People today have more tobacco.
D. Food is quite different between life today and life in ancient times.
Professor Reason recently persuaded 35 people to keep a diary of all their absent-minded actions for two weeks. When he came to analyze their embarrassing errors, he was surprised to find that nearly all of them fell into a few groups.
One of the women, for instance, on leaving her house for work one morning threw her pet dog her earrings and tried to fix a dog biscuit on her ear. “The explanation for this is that the brain is like a computer,” explains the professor. “People programme themselves to do certain activities regularly.” It was the woman’s custom every morning to throw her dog two biscuits and then put on her earrings. “But somehow the action got reversed（颠倒）in the programme.” About one in twenty of the incidents the volunteers reported were these “programme assembly failures.”
Twenty percent of all errors were “test failures” — mainly due to not verifying the progress of what the body was doing. A man about to get his car out of the garage passed through the back yard where his garden jacket and boots were kept, put them on — much to his surprise. A woman reported, “I got into the bath with my socks on.”
The commonest problem was information “storage failures”. People forgot the names of people whose faces they knew, went into a room and forgot why they were there, mislaid something, or smoked a cigarette without realizing it.
The research so far suggests that while the central processor of the brain is liberated from second-to-second control of a well-practiced routine, it must repeatedly switch back its attention at important decision points to check that the action goes on as intended. Otherwise the activity may be gotten by another frequently and recently used programme, resulting in embarrassing errors.The purpose of the professor’s research is to __________.
| A．show the difference between men and women |
| B．sort and explain some errors in human actions |
| C．find the causes which lead to computer failures |
| D．compare computer functions with brain working |
Which of the following might be grouped under “programme assembly failures”?
| A．A woman went to a shop and forgot what to buy. |
| B．A man returning home after work left his key in the lock. |
| C．A lady fell as she was paying attention to each step her feet were taking. |
| D．An old man, with his shoes on, was trying to put on his socks. |
The underlined word “verifying” (in paragraph 3) can be replaced by “_______”.
| A．improving | B．changing | C．checking | D．stopping |
According to the passage, the information “storage failure” refers to “_______”.
| A．information collecting system being destroyed |
| B．one’s total memory being removed |
| C．the loss of part of one’s memory for a time |
| D．the separation of one’s action from words |
| You are here: Experts > Science > Science/Nature for Kids > Science for Kids > Life Science for teens<> |
| Expert: Science Adviser - <>3/21/2011 |
| QUESTION: Dear Marie, Do you have some good suggestions of biology: plant, animal, human science experiments that would work well with teenagers? Scientific methods must go with the experiments. Thanks! < Donna ANSWER: Dear Donna, Marie is not online and I’ll help you instead of him. There are a lot of little things that can be done, but do you mean lab experiment or statistical analysis, etc.? Let us know what can be suitable for you teens, and we will do our best to send you some experiments to do. Best， Gloria |
| Expert: Science Adviser - 3/23/2011 |
| QUESTION: Dear Gloria, I need lab experiments. The teenage students and I will use data from these experiments to make charts, graphs, tables, etc. and to provide claims and evidence to explain more about the results. Thank you very much. Donna ANSWER: Hi there, Your best and easiest way is to do some chemistry experiments. Those are very easy and most probably you can do it in the lab and have charts, etc. for you. I do not have any particular one at the top of my head because I do cancer research and it is a bit more difficult than research for teenagers. I think you can look through these and see if you find something useful for you. http://www.siraze.net/chemistry/sezennur/experiments.htm If not, get back to me and Marie, and we’ll look more. The good thing about this site is that it has the procedures that you can follow. Good luck， Gloria |
How many Science Advisers are there working for this website?
| A．Only one. | B．At least two. | C．About three. | D．Over five. |
According to Donna, she and the teenage students need ___________.
| A．experiments in the lab | B．statistical analysis |
| C．chemistry experiments | D．charts and evidence |
Who is this text for?
| A．Teenagers. | B．Teachers. | C．Parents. | D．Experts. |
According to Gloria, Donna and the teenage students should __________.
| A．turn to others for help | B．do cancer researches |
| C．look through a website | D．tell who will be helped |
According to the dictionary definition of“create, ordinary people are creative every day”.To create means“to bring into being, to cause to exist something each of us does daily”.
We are creative whenever we look at or think about something in a new way. First, this includes an awareness of our surroundings. It means using all of our senses to become aware of our world. This may be as simple as being aware of color and texture(质地),as well as taste, when we plan a meal. Above all, it is the ability to notice things that others might miss.
A second part of creativity is an ability to see relationships among things. If we believe the expression,“There is nothing new under the sun, the creativity is remaking or recombining(重组) the old in new ways.”For example, we might do this by finding a more effective way to study or a better way to arrange our furniture, or we might make a new combination of camera lenses and filters to create an unusual photograph.
A third part of creativity is the courage and drive to make use of our new ideas, to ask for them to achieve some new results. To think up a new idea is one thing; to put the idea to work is another.
These three parts of creativity are included in all the great works of geniuses, but they are also included in many of our day-to-day activities.“There is nothing new under the sun” really implies that _________.
| A．a new thing can only be created at the basis of earliest things |
| B．a new thing is only a tale |
| C．we can seldom create new things |
| D．we can hardly see really new things in the world |
What does the author think about the relationship between a new thought and its being put into practice?
| A．It’s more difficult to create a new thought than to use it in practice. |
| B．To find a new thought will clearly lead to the production of a new thing. |
| C．A man with an excellent ability of practice can easily become an inventor. |
| D．One may come up with a new thought, but can not put it into practice. |
The best title for this passage is__________.
| A．How to Develop One’s Creativity | B．What Is Creativity |
| C．The Importance of Creativity | D．Creativity, a Not Faraway Thing |
All plant cells are capable of taking up（吸收）water. Even dead ones do to a certain degree. Absorption（吸收）of water by dead cell walls makes wood become larger.
In common land plants, the living cells of roots take upmost of the water. Land plants without roots do exist, however. Those greenish-yellow lichens（苔藓）you see on rocks in the high mountains have no roots. Half a billion years ago, when water plants started to enter the land, the first land plants did not have roots.
Even among the flowering plants, one finds rootless forms. These flowering plants are “the higher plants” because they evolved（进化）recently and are thus considered higher on the evolutionary scale（进化度）.
In the Peruvian desert, there grows one of these rootless higher plants, a bromeliad. It is a relative of the pineapple. Even if this plant had roots, they would be of no use, because where the plant grows, it never rains. The plant gets its water only from the dew（露水）it collects at night, when its leaves cool off. Such rootless plants, of course, can be moved with ease, but they will only grow when they are placed out in the open. If they are placed too near a house, the radiation from the heat of the house prevents the leaves from cooling and so prevents dew from forming, and the plant dies.
In the southern United States and in Puerto Rico, one sees bromeliads growing high above the streets on the insulation（绝缘物）of electric wires. These plants get their water from rain, and the only soil they ever come in contact with is the dust that may blow on their leaves.Wood becomes larger because of .
| A．dead cell walls | B．water entering dead cells |
| C．the growth of cells | D．the death of cells |
From the passage we know that the evolutionary scale is graded according to.
| A．evolutionary cycles | B．heights and depths |
| C．time | D．kinds |
The “bromeliad” is a plant that.
| A．has no roots | B．is a pineapple |
| C．can grow anywhere | D．takes up water through its leaves |
The most suitable title for this passage is “”.
| A．Absorption of water by plants | B．Rootless plants in America |
| C．Plants in the desert | D．Higher plants |
Let’s pretend we’re sailing down the Rhine River on a pleasure boat. The Rhine is one of the main waterways of Germany, and the river traffic is heavy. It’s interesting to watch the many boats going up and down the river. But the river traffic is not nearly so interesting as the beautiful scenery along the banks and hillsides. The boat is passing many old castles. We can see people working in the vineyards (葡萄园) on the hillsides. There are vineyards as far as the eye can see. Wine from the Rhine Valley is famous all over the world.
Suddenly our boat slows down and begins to turn a little. We are coming to a sharp bend in the river. On our right we can see a rocky cliff over 400 feet high. At first it looks quite ordinary, but there is nothing ordinary about it. There are many stories, poems, and songs about the cliff. We are looking at the Lorelei. Then someone on the boat begins to sing in German, the song of the Lorelei. It is a song about a beautiful siren (妖妇) who has lured(引诱) many sailors to their deaths.
The siren is supposed to sit on the rock combing her long golden hair and singing. The sailors who hear her forget to steer（掌舵）, and the current of river hurls (掀翻) their boats on the rocks and dashes（猛撞）them to pieces.
Soon other people on the boat begin to sing. The beautiful song adds to special magic to the moment, and you begin to realize why so many people have made this trip down the Rhine to see the rock of the Lorelei.The most interesting thing to those who are sailing down the Rhine River on a pleasure boat is.
| A．to watch many boats going up and down the river |
| B．to see the beautiful scene along the banks and hillsides |
| C．to hear a song about beautiful siren |
| D．to see a beautiful siren combing her golden hair |
Which of the following is famous all over the world?
| A．The Rhine River. | B．The River Traffic. |
| C．Wine from the Rhine Valley. | D．The Lorelei. |
We can see a rocky cliff over 400 feet high.
| A．on our right when coming to a sharp bend | B．on the Rhine hillsides |
| C．from the Rhine Valley | D．on the boat |
The song of the Lorelei is about.
| A．The Rhine wine |
| B．a rocky cliff |
| C．the beautiful scenery along the Rhine River |
| D．a beautiful and dangerous siren |