The Uniqueness of Finger-prints (指纹的唯一性)
Every human being has a unique① arrangement of the skin on his fingers and this arrangement is unchangeable. 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 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 original② pattern. It is only when the inner skin is injured that the arrangement will be destroyed. 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 by recorded easily. With special methods, identification③ can be achieved successfully within a short time. 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. His finger-prints can prove who he is even if his appearance has been changed by age or accident.
When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye. Special techniques are used to "develop" them. Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.
Choose the best answers according to the above.
Supermarkets are trying out new computers that make shopping carts more intelligent(具备智能的). They will help shoppers find paper cups or toilet soap, and keep a record of the bill.
The touch-screen devices(触摸屏装置) are on show at the Food Marketing Institute's exhibition here this week, "These devices are able to create value and get you around the store quicker," said Michael Alexander, manager of Springboard Retail Networks Inc., which makes a smart cart computer called the Concierge.
Canadian stores will test the Concierge in July. A similar device, IBM's "Shopping Buddy", has recently been test-marketed at Stop & Shop stores in Massachusetts.
Neither device tells you how many fat grams or calories are in your cart, but they will flash you with items on sale. The idea is to make it easier for people to buy, not to have second thoughts that maybe you should put something back on the shelf.
"The whole model is driven by advertisers' need to get in front of shoppers," said Alexander. "They're not watching 30-second TV ads anymore."
People can use a home computer to make their shopping lists. Once at the store, a shopper can use a preferred customer card to start a system(系统) that will organize the trip around the store. If you're looking for toothpicks, you type in the word or pick it from a list, and a map will appear on the screen showing where you are and where you can find them.
The device also keeps a record of what you buy. When you're finished, the device figures out your bill. Then you go to the checker or place your card into a self-checkout stand and pay.
The new computerized shopping assistants don't come cheap. The Buddy devices will cost the average store about $160,000, and the Concierge will cost stores about $500 for each device.
a. Start the system. b. Make a shopping list.
c. Find the things you want. d. Go to a self-checkout stand.
If you saw a father (pat) his son the back smiling happily, what would you think was on? You would probably think that the father was his son on (do) something well, maybe (pass) an exam or winning a race. You would know what was going because you understood the message (convey) by the father's body language. the world, a pat on the back and a smile usually means," Well done".
增加:在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线，并在该词下面写出修改后的词。
注意:1）每处错误及其修改均仅限一词;
2）只允许修改10处，多者(从第11处起)不计分。
One day, my little brother bought a ice cream in the street, enjoying eating it. Unexpect, he saw his friend coming towards him, so he hurriedly hid the ice creams behind him. After he greeted his friend, they begin to talk. His friend had his dog with her. When he stopped talk with my brother, his dog moved around. The dog was such glad to find the ice cream in my brother's hand and it began to eat it with a great pleasure. My brother felt embarrassing that he hadn't shared the ice cream with his friend, he gave the ice cream to the dog. Then he bought another two for his friend and himself.
John Smith was a very handsome young man but he was lazy. He had finished his education and was happy to sit in his room and listen to the radio all day long. In fact, he had been doing nothing for almost six months, which worried his father a lot. One day Mr. Smith decided that he had to do something. "John, when I was your age I was working and supporting my ten brothers and sisters. I want you to go out and get a job." So that was what he did. In fact, in the next three months, John started ten jobs and was fired from ten jobs. He explained to his father.
"They wanted me to be at work at 8:00 a. m. and told me to do all sorts of unpleasant things."
"I don't care how you do it," Mr. Smith said. "Either you earn some money or move out of the house. I gave you one week's time."
In the next few days John began to change. He still stayed in his room all day, but spent his time writing letters and reading through the newspapers. More and more posts began to arrive for him. He bought a new suit for himself and invited his parents to the theatre and for dinner afterwards at the most expensive restaurant in town. When his proud parents arrived home after their evening hour, a policeman was waiting at the front door.
"John Smith," he said as he handed him a piece of paper, "I'll see you in the court tomorrow. "
When he got outside, John told his parents everything. "When you told me to earn some money, I decided to put an advertisement in the newspaper saying, ‘New way to money fast!Send me $5 and I'll tell you my secret. 'When I received the money I wrote back telling people to do as I do."
John was fined $250 by the court and was ordered to pay all the people back. As he left the court house feeling very ashamed, a newspaper man came up to him, "Young man, would you like to tell your story to my newspaper for $2500?"
When Lew Alcindor was 13, and obviously still growing, a group of schools began offering him scholarships (奖学金). The Alcindors decided to send their only child to Power Memorial Academy, a small school on Manhattan's West Side.
At Power, Alcindor came under the control of Coach Jack Donohue, a strict young man who already gained his fame as one of the best coaches in the city. Donohue brought Alcindor along slowly. As a first-year student, the boy was not able to do much but wave his long skinny arms and shoot a basket now and then. But by the second year, when he was 15 years old and nearly 7 feet tall, Alcindor was quick and skillful enough to make the high school All-American team and to lead Power to an undefeated season.
From then on he simply got better. Some rival coaches(对方教练) used to take their teams quickly away from the floor before Power warmed up so that their players would not see him any sooner than they had to. Wearing size 16 D shoes and sucking a lollipop(棒棒糖), Alcindor would loosen up by starting his leaping lay-ups(擦板球). Then he would casually shoot the ball with either hand, to the delight of the fans.
When reporters and photographers began to follow Alcindor closely, Donohue protected his boy firmly. He simply ordered Lew to talk to no member of the press, and this suited Lew fine. He was not comfortable talking to grown-ups, perhaps because he towered over them. Discouraged photographers began following him in secret as though he were an easily-frightened giraffe. Once after ducking into a subway to escape, Alcindor told a friend that it was all becoming like policemen and robbers. "People want you not for yourself," Donohue warned him, "but because you're a basketball player. Don't forget that."
He looked around as if .
It was extreme cold last Monday morning. While I was walking in my way to school, I noticed two street cleaner sweeping the street. Seeing them are working so hard on such a cold morning, I was moved and made up my mind do something for them. After arriving at school, I discussed with some classmates that we could do. The next day, we got up early and preparing porridge at home. When we handed the cleaners the hot porridge and expressed us appreciation for their hard work, they looked a little surprising at first. And then they took the porridge and thanked us happily. Since it was very cold, we all felt warm at that moment.
All in all , some animals in the world are in danger. Some people call for an end to destroying the forests. They say that it is human beings that carry off the animals' homes. We should take some measures, or else our actions are to be answered for some day.
Three Boys and a Dad
Brad closed the door slowly as Sue left home to visit her mother. Expecting a whole day to relax, he was thinking whether to read the newspaper or watch his favorite TV talk show on his first day off in months. "This will be like a walk in the park," he'd told his wife. "I'll look after the kids, and you can go and visit your mom. "
Things started well, but just after eight o'clock, his three little "good kids"—Mike, Randy, and Alex—came down the stairs in their night clothes and shouted "breakfast, daddy." When food had not appeared within thirty seconds, Randy began using his spoon on Alex's head as if it were a drum. Alex started to shout loudly in time to the beat(节拍). Mike chanted "Where's my toast, where's my toast" in the background. Brad realized his newspaper would have to wait for a few seconds.
Life became worse after breakfast. Mike wore Randy's underwear on his head. Randy locked himself in the bathroom, while Alex shouted again because he was going to wash his pants. Nobody could find clean socks, although they were before their eyes. Someone named "Not Me" had spilled a whole glass of orange juice into the basket of clean clothes. Brad knew the talk show had already started.
By ten o'clock, things were out of control. Alex was wondering why the fish in the jar refused his bread and butter. Mike was trying to show off his talent by decorating the kitchen wall with his colour pencils. Randy, thankfully, appeared to be reading quietly in the family room, but closer examination showed that he was eating apple jam straight from the bottle with his hands. Brad realised that the talk show was over and reading would be impossible.
At exactly 11:17, Brad called the daycare centre. "I suddenly have to go into work and my wife's away. Can I bring the boys over in a few minutes?" The answer was obviously "yes" because Brad was smiling.
