Look, this is the first plane in the world to be created using the new technology of “3D printing”. The airplane was built using only a computer—but it can fly at a speed of 100mph and has a two-meter wingspan.
It was produced using a special nylon laser printer that builds up something layer-by-layer. The parts were made separately and attached using a “snap fit” technique so the aircraft could be put together without tools in minutes.
No fasteners at all were used in the manufacture of the plane. Unmanned and electrically powered, the plane can travel in near silence and is also equipped with a small autopilot system. The special production process used is known as “laser sintering(激光烧结)”and allows the designers to create shapes and structures that would normally include costly manufacturing techniques. This technology allows a highly-tailored aircraft to be developed from your own design to first flight in days, while using traditional materials and techniques would take months. And because no tooling is required for manufacture, major changes to the shape and scale of the aircraft can be made with no extra cost.
Professor Jim Scanlon, who led the team, said, “The process allows the design team to revisit historical techniques and ideas that would have been too expensive using traditional manufacturing.” He added, “This form of structure is very firm and lightweight, but very complex. If it was manufactured traditionally it would require a large number of individually tailored parts that would have to be connected or fastened at great expense.”
The new printed plane is known as the Southampton University Laser Sintered Aircraft—or SULSA for short—and is part of a wider project using cutting-edge manufacturing techniques. The University of Southampton has been at the leading position of Unmanned Aerial Vehicle development since the early 1990s.Which of the following would be the best title for the text?
A. Revolutionary Breakthrough of 3D Printer
Scientists Create Aircraft with High Speed
C. New Designed Airplane with New Techniques.
D. The World’s first 3-D printed Airplane, SULSAHow could the plane work while flying?
| A．It should be controlled by an autopilot system. |
| B．It should be controlled by “laser sintering”. |
| C．A pilot controls it using a remote control. |
| D．A pilot with high techniques controlled it. |
This kind of plane has the following advantages EXCEPT ______.
| A．it produces little noise while flying |
| B．it is manufactured in quite a short time |
| C．it only requires simple and cheap tools |
| D．it needn’t extra cost if changes are made |
Professor Jim Scanlon believes they can _____ with their techniques.
| A．produce firmer and lighter real planes easily |
| B．connect and fasten tailor parts for real planes |
| C．copy earlier planes to study their techniques |
| D．find differences by studying the traditional ones |
Body and Food
Your body, which has close relations with the food you eat, is the most important thing you own, so it needs proper treatment and proper nourishment (营养).The old saying “An apple a day keeps the doctor away ”is not as silly as some people think. The body needs fruit and vegetables because they contain vitamin C. Many people take extra vitamins in pill form, believing that these will make them healthy.
But a good diet is made up of nourishing food and this gives all the vitamins you need. The body doesn’t need or use extra vitamins, so why waste money on them?
In the modern western world, many people are too busy to bother about eating properly. They throw anything into their stomachs, eating hurriedly and carelessly. The list of illnesses caused or made worse by bad eating habits is frightening,“Your body has close relations with the food you eat.” It really means that ______.
| A．all kinds of food you eat can be made into your body |
| B．your body is made up of the food you eat |
| C．what you eat has great effect on your health |
| D．the more you eat, the fitter you will feel |
The old saying referred to in the passage tells us that ______.
| A．eating apples regularly does lots of good to our health |
| B．the apple is the best among all kinds of fruits |
| C．apples can take the place of doctors |
| D．an apple is a sure cure for illness |
From the passage we can draw a conclusion that if we want to keep healthy, we should ______.
| A．only eat an apple a day |
| B．eat properly |
| C．take as many vitamin pills as possible |
| D．throw something into our stomachs slowly and carefully |
Popeye the Sailor first became a popular cartoon in the 1930s.The sailor in that cartoon ate lots of spinach(菠菜) to make him strong. People watched him, and they began to buy and eat a lot more spinach. Popeye helped sell 33 percent more spinach than before! Spinach became a necessary part of many people’s diets. Even some children who hated the taste began to eat the vegetable.
Many people thought that the iron（铁）in spinach made Popeye strong, but this is not true. Spinach does not have any more iron than any other green vegetable.
People only thought spinach had a lot of iron because the people who studied the food made a mistake. In the 1890s, a group of people studied what was inside vegetables. This group said that spinach had ten times more iron than it did. The group wrote the number wrong, and everyone accepted it.
Today, we know that the little iron there is in spinach cannot make a difference in how strong a person is. However, spinach does have something else which the body needs—folic acid(叶酸).
It is interesting to point out that folic acid can help make a person strong. Maybe it was really the folic acid that made Popeye strong all along. A good title for this reading passage is______.
| A．Popeye the Sailor |
| B．The Truth About Spinach |
| C．A Mistake with Numbers |
| D．Folic Acid Makes You Strong |
Why did many people eat spinach after they saw Popeye the Sailor?
| A．They thought spinach made them strong. |
| B．They thought Popeye was funny. |
| C．Spinach had a lot of iron. |
| D．People liked folic acid. |
A research group told people that spinach______.
| A．made Popeye strong |
| B．was a green vegetable |
| C．had less iron than other green vegetables |
| D．had more iron than other green vegetables |
The reading passage says that perhaps Popeye got his strength from______.
| A．iron | B．folic acid | C．spinach | D．exercise |
A traveler was staying in an Egyptian village. One day, she held up her camera to take pictures of the children. Suddenly the young ones began to shout at her. The traveler’s face turned red and she apologized to the head for what she was doing, and told him she had forgotten that people in some places believed a person would lose his soul(灵魂) if his picture was taken. She explained to him the operation of a camera for a long time. Several times the head tried to say something, but he couldn’t. When she believed that the head didn’t fear any longer, the traveler then let him speak. With a smile, he said, "The children were trying to tell you that you forgot to take off the lens(镜头) cap!" The children shouted when the traveler was taking pictures of them because _______.
| A．they didn’t want to stop playing |
| B．the traveler forgot to take off the cap on her head |
| C．they didn’t want to have their pictures taken |
| D．the traveler was not doing well with her camera |
The traveler explained how to use a camera to the head because _______.
| A．the head was very interested in her camera |
| B．the head wanted to learn to take pictures |
| C．she was afraid of the head |
| D．she wanted the head not to worry about what she was doing |
Which of the following is NOT right?
| A．The traveler knew something about people in some countries. |
| B．The children wouldn’t mind if the traveler took pictures of them. |
| C．The head was afraid that the traveler’s camera would hurt the children. |
| D．The traveler didn’t understand why the children shouted. |
Read the following passage. Answer the questions according to the information given in the passage and the required words limit. Write your answers on your answer sheet.
Almost everybody in America will spend a part of his or her life behind a shopping cart(购物手推车). They will, in a lifetime, push the chrome-plated contraptions many miles. But few will know—or even think to ask—who it was that invented them.
Sylvan N. Goldman invented the shopping cart in 1937. At that time he was in the supermarket business. Every day he would see shoppers lugging(吃力地携带) groceries around in baskets they had to carry.
One day Goldman suddenly had the idea of putting baskets on wheels. The wheeled baskets would make shopping much easier for his customers, and would help to attract more business.
On June 4, 1937, Goldman’s first carts were ready for use in his market. He was terribly excited on the morning of that day as customers began arriving. He couldn’t wait to see them using his invention.
But Goldman was disappointed. Most shoppers gave the carts a long look, but hardly anybody would give them a try.
After a while, Goldman decided to ask customers why they weren’t using his carts. “Don’t you think this arm is strong enough to carry a shopping basket?” one shopper replied.
But Goldman wasn’t beaten yet. He knew his carts would be a great success if only he could persuade people to give them a try. To end this, Goldman hired a group of people to push carts around his market and pretend they were shopping! Seeing this, the real customers gradually began copying the phony(假冒的)customers.
As Goldman had hoped, the carts were soon attracting larger and larger numbers of customers to his market. But not only did more people come—those who came bought more. With larger, easier-to-handle baskets, customers unconsciously bought a greater number of items than before.
Today’s shopping carts are five times larger than Goldman’s original model. Perhaps that’s one reason Americans today spend more than five times as much money on food each year as they did before 1937—before the coming of the shopping cart.What do the underlined words “chrome-plate contraptions” in Paragraph 1 refer to ? ( no more than 3 words)
What was the purpose of Goldman’s invention? (no more than 8 words)
Why was Goldman disappointed at first? (no more than 6 words)
Why did Goldman hire people to push carts around his market? (no more than 10 words)
Read the following passage. Complete the diagram by using the information for the passage. Write NO MORE THAN 3 WORDS for each answer.
Since it was founded a year ago, the babysitting pool has become increasingly popular in the United States. More and more mothers have joined it and have benefited from it. What attracts them most is the idea that you pay your babysitter not in cash, but in paper cards. When you join the babysitting pool, you are given thirty cards, which are worth 30-minute babysitting time each. For each half an hour while you are gone, the babysitter gets paid one card.
There are rules regulating this service. You should not watch more than three kids at a time including your own. On big holidays, such as Christmas and Thanksgiving, the babysitter should be paid twice as much, which means two cards for every half an hour. When you leave the babysitting pool, you should return all the cards. If you are out of cards, you cannot use money instead. You should have to baby-sit for others to earn enough cards so that you will have them handy when you yourself need a babysitter.
Many mothers think highly of this service. It keeps children in constant touch with one another, and makes life easier for the mothers. Since in most cases, the babysitter is the mother who watches other kids at her own home, it is still possible for her to do her own things while the kids play with each other. In fact most mother babysitters find that their own kids are less of a monster and easier to watch when they are around other playmates. Moreover, since the babysitting pool service does not involve money, it will not be a financial loss to the family.
In the past year, the babysitting pool has helped so many mothers with their work that they all think that it is indeed a good community service worth keeping.
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