_____ Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.
The ridge （隆起） structure on a person's fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original pattern. Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.
Finger-prints can be made very easily with printer's ink. They can be recorded easily.
______ Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case. A suspected man may deny a charge but this may be in vain. ___
___ .
When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye. ______ . Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.
| A．Special techniques are used to "develop" them. |
| B．A fingerprint is an impression of the friction ridges of all part of the finger. |
| C．It is only when the inner skin is injured that the arrangement will be destroyed. |
| D．With special methods, identification can be achieved successfully within a short time. |
E. A latent(隐约的)print is the chance reproduction of the friction ridges deposited on the surface of an item.
F. His finger-prints can prove who he is even if his appearance has been changed by age or accident.
G. Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable.
Children today are crazy about roller skating（溜冰）, for it's easy and fun. After supper on week days, anytime on weekends and especially any day in school holidays, so many roller skaters flow into streets, squares, parks and playgrounds. What a beautiful sight!
But a long time ago, roller skating was a different story. Before 1750, the idea of skating didn't exist. That changed because of a man named Joseph Merlin，whose work was making musical instruments. In his spare time he liked playing the violin. Merlin was a man of ideas and dreams. People called him a dreamer.
One day Merlin received an invitation to attend a fancy dress ball. Very pleased and a little excited, he accepted it. As the day of the party came near, Merlin began to think hard how to make an impressive entrance at the party. A strange idea struck him one day—he would get a lot of attention if he could skate into the room.
He tried different ways to make himself roll. Finally, he decided to put two wheels under each shoe. These were the first roller skates. Very proud of his invention, he couldn't wait for the special day to come, when he would arrive at the party on wheels while playing the violin.
On the night of the party Merlin did as he had planned, rolling into the room playing his violin. Quite astonished，all present cast their eyes over him. Then, unexpectedly, came one problem. Merlin had no way to stop his roller skates. He rolled on and on. Suddenly, he ran into a huge mirror that was hanging on the wall. Down fell the mirror, breaking to pieces. Nobody forgot Merlin's grand entrance for a long time!Merlin was considered a dreamer because he ________.
| A．always dreamed while sleeping |
| B．had very rich imagination |
| C．often gave others surprises |
| D．invented the roller skates |
Merlin roller skated into the room in order to ________.
| A．arrive at the party on time |
| B．impress the party guests |
| C．test his new roller skates |
| D．make the host satisfied |
The main point the writer tries to make in the last paragraph is ________.
| A．the party guests laughed at Merlin |
| B．the roller skates needed improving |
| C．Merlin got himself into great trouble |
| D．Merlin succeeded beyond expectation |
The text is mainly about ________.
| A．an unusual party | B．a funny musician |
| C．the origin of roller skating | D．the great joy Merlin brought |
Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need. It has been shown that rats will, when given a choice over a period of time, prefer water with vitamins(维生素) to water without vitamins, even though there is no difference in taste or smell between the two water bottles. When a sweet smell was added to the vitamins-enriched water, the rats did seem to develop a taste for it and kept drinking it, even after the vitamins were changed to the clear water. In time(最后), however, they broke the habit and went back to where the necessary vitamins were.
In experiments, babies of 6 to 12 months old were placed in a room with many choices of baby food before them. They were given whatever food they pointed to or appeared interested in. We are told that at first they showed some unusual eating habits, but over a period of time they managed to choose a well-balanced diet.
So in choosing food, rats and babies do seem to know what's best for them. Clearly, there is a kind of “body wisdom”, which humans soon lose. Most of us do not eat as wisely as we could. Many of our food preferences are culturally determined and influenced by old habits. Some people eat foxes, dogs and blackbirds, while we eat cows and pigs. So what people eat and how much they eat seem to be greatly influenced by what is going around them. In the experiment on rats, a sweet smell was added to the rats’ drinking water to ________ .
| A．encourage rats to drink vitamins-enriched water |
| B．test whether rats know which drink is good for them |
| C．find out rats’ preference in flavor(口味) |
| D．show the vitamins are tasteless |
Talking about eating habits, babies and rats are just like each other because ________ .
| A．both have the wisdom to choose a balanced diet |
| B．both prefer flavored food and drink |
| C．both have the same eating habits |
| D．both develop a taste for the same kinds of food |
In the experiment mentioned in the second paragraph, babies were ________ .
| A．given many choices of drinks |
| B．placed and fed in a hospital |
| C．given all kinds of baby food |
| D．trained to select a balanced diet |
Grown-up people’s eating habits differ from those of babies because ________ .
| A．they know better than babies what kinds of food are good for their health |
| B．they usually cannot say no to all kinds of delicious foods |
| C．their eating habits have much to do with the social and cultural customs |
| D．they have more choices of food than babies in eating patterns |
This is an open letter to the three people who stole my handbag from the department store where I am employed as a shop assistant.
When you took my bag, I don’t know what you thought you were going to get. With my wages, there's not much left on a Tuesday. I hope the ￡5 was useful to you. If you really need a couple of pounds, I suppose you could always cash one of the two checks left in my check book. Of course, I phoned the bank right away and the check-cashing card is no longer valid, so it won’t be of much use to you.
Actually I don’t care about the money too much. We single parents who work to support our families understand only too well what it means to be short of cash. However, I don’t suppose it went very far among the three of you. Sorry about that!
I wish you had left the bag behind and just taken the wallet and check book. There were all kinds of papers and notes that I really need. I really think that was very inconsiderate of you. I mean, how would you like something like that to happen to you?
Well, perhaps the bag will turn up. It wasn’t even an expensive one, just a plain, old brown leather shoulder bag. You probably threw it in the nearest rubbish bin or threw it into the bushes. We've looked around, of course, but no one saw which way you went after you left the shop.
I'm not really angry with you. I know how the pressures of modern life can affect us, but I am sad at the loss of my personal things. I feel helpless. The police were very icy, and they just shrugged their shoulders. “It happens all the time,” they told me. Some small comfort, I suppose. But I’ve lost just a little more faith in human nature. And as my young son said when I told him what had happened, “Why? Mummy, why us?” I couldn't answer that question. I wonder if you can. In writing Paragraph 2, the writer wants to.
| A．describe the contents of the bag in detail |
| B．tell the thieves hardly any money was available |
| C．state the fact that she was careless with the money |
| D．give some suggestions to the three thieves |
Which of the following is the most valuable to the writer?
| A．The cash in her bag. |
| B．The handbag itself. |
| C．The papers and notes in the bag. |
| D．The check book in the bag. |
What can we conclude about the police?
| A．They are unable to find the thieves. |
| B．They show sympathy to the woman. |
| C．They have doubts about human nature. |
| D．They think the case quite common. |
Why does the author write the letter?
| A．To give the thieves a serious warning. |
| B．To express her affection for her valuable bag. |
| C．To call people’s attention to their belongings. |
| D．To complain about the fall of morality. |
Below is a selection from a popular science book.
| If blood is red, why are veins (静脉) blue? Actually, veins are not blue at all. They are more of a clear, yellowish colour. Although blood looks red when it's outside the body, when it's sitting in a vein near the surface of the skin, it's more of a dark reddish purple colour. At the right depth, these blood-filled veins reflect less red light than the surrounding skin, making them look blue by comparison. Which works harder, your heart or your brain? That kind of question depends on whether you are busy thinking or busy exercising. Your heart works up to three times harder during exercise, and shifts enough blood over a lifetime to fill a supertanker. But, in the long run, your brain probably tips it, because even when you’re sitting still your brain is using twice as much energy as your heart, and it takes four to five tunes as much blood to feed it. Why do teeth fall out, and why don't they grow back in grown-ups? Baby (or "milk") teeth do not last long; they fall out to make room for bigger, stronger adult teeth later on. Adult teeth fall out when they become damaged, decayed and infected by bacteria. Once this second set of teeth has grown in, you're done. When they're gone, they’re gone. This is because nature figures you're set for life, and what controls regrowth of your teeth switches off. Do old people shrink as they age? Yes and do. Many people do get shorter as they age. But, when they do, it isn't because they're shrinking all over. They simply lose height as their spine(脊柱) becomes shorter and more curved due to disuse and the effects, of gravity (重力). Many (but not all) men and women do lose height as they get older. Men lose an average of 3-4 cm in height as they age, while women may lose 5 cm or more. If you live to be 200 years old, would you keep shrinking till you were, like 60 cm tall, like a little boy again? No, because old people don't really shrink! It is not that they are growing backwards ---- their legs, arms and backbones getting shorter. When they do get shorter, it's because the spine has shortened a little. Or, more often, become more bait and curved. Why does spinning make you dizzy (眩晕的)? Because your brain gets confused between what you're seeing and what you're feeling. The brain senses that you’re spinning using special gravity-and-motion-sensing organs in your inner ear, which work together with your eyes to keep your vision and balance stable. But when you suddenly stop spinning the system goes out of control, and your brain thinks you're moving while you're Dot! Where do feelings and emotions come from? Mostly from an ancient part of the brain called the limbic system. All mammals have this brain area — from mice to dogs, cats, and humans. So all mammals feel basic emotions like fear, pain and pleasure. But since human feelings also involve other, newer bits of the brain, we feel more complex emotions than any other animal on the planet. If exercise wears you out, how can it be good for you? Because our bodies adapt to everything we do to them. And as far as your body is concerned, it’s "use it, or lost it”! It's not that exercise makes you healthy; it's more that a lack of exercise leaves your body weak and easily affected by disease. |
What is the colour of blood in a vein near the surface of the skin?
| A．Blue. | B．Dark reddish purple. |
| C．Red. | D．Light yellow. |
Why do some old people look a little shrunken as they age?
| A．Because they are more easily affected by gravity. |
| B．Because their spine is in active use. |
| C．Because their spine becomes more bent. |
| D．Because they keep growing backwards. |
Which of the following statements about our brain is true?
| A．In the long run, our brain probably works harder than our heart. |
| B．When our brain senses the spinning, we will fell dizzy. |
| C．The brains of the other mammals are as complex as those of humans. |
| D．Our feelings and emotions come from the most developed area in our brain. |
What is the main purpose of the selection?
| A．To give advice on how to stay healthy. |
| B．To challenge new findings in medical research. |
| C．To report the latest discoveries in medical science. |
| D．To provide information about our body. |
Education is not an end, but a means to an end. In other words, we do not educate children only for the purpose of educating them. Our purpose is to fit them for life.
In some modern countries it has for some time been fashionable to think that by free education for all whether rich or poor, clever or stupid, one can solve all the problems of society and build a perfect nation. But we can already see that free education for all is not enough: we find in such countries a far larger number of people with university degrees; they refuse to do what they think “low” work; and in fact, work with hands is thought to be dirty and shameful. But we have only to think a moment to understand that the work of a completely uneducated farmer is far more important than that of a professor; we can live without education, but we die if we have no food. If no one cleaned our streets and took the rubbish away from our houses, we would get terrible diseases in our towns.
In fact, when we say that all of us must be educated to fit us for life, it means that we are educated in such a way that, firstly, each of us can do whatever work suited to his brains and ability, and secondly, that we realize that all jobs are necessary to society, and that it is very bad to be ashamed of one’s work. Only such a type of education can be considered valuable to society.The writer of this passage thinks that________.
| A．free education for all probably leads to a perfect world |
| B．free education can solve all of the world’s problems |
| C．free education won’t help to solve social problems |
| D．all the social problems can’t be solved by free education |
The writer wants to prove that ___________.
| A．a farmer is more important than a professor |
| B．our society needs all kinds of jobs |
| C．our society needs free education for all |
| D．people with university degrees earn more money |
According to the passage, ____________.
| A．work with hands is low work |
| B．work with hands is dirty and shameful |
| C．work with hands is the most important |
| D．we can’t regard work with hands as low work |
The purpose of education is ___________.
| A．to prepare children for their future life |
| B．to let everyone receive education |
| C．to choose a system of education |
| D．to prepare children for well-paid jobs |