How can you find out what is going on inside a person’s
body without opening the patient’s body up? Regular X rays can show a lot. CAT scans can show even more. They can g
ive a complete view of body organs.
What is a CAT scan? CAT stands for a kind of machine. It is a special X-ray machine that gets a 360-degree picture of a small area of a patient’s body.
Doctors use X rays to study and determine diseases and injuries within the body, X rays can find a foreign object inside the body or take pictures of some inside organs to be X-rayed.
A CAT scanner, however, uses a group of X rays to give a cross-sectional（横截面）view of a specific part of the body. A fine group of X rays is scann
ed across the body and around the patient from many different directions. A computer studies the information from each direction and produces a clear cross-sectional picture on a screen. This picture is then photographed for later use. Several cross sections, taken one after another, can give clear “photos” of the entire body or of any body organs. The latest CAT scanners can even give clear pictures of active, moving organs, just as a fast-action camera can “s
top the action”, giving clear pictures of what appears unclear to the eye. And because of the 360-degree pictures, CAT scans show clear and complete views of organs in a manner that was once only shown during operation or examination of a dead patient.
Frequent appearance before X rays can cause skin burns, cancer or other damage to the body. Yet CAT scans actually don’t cause the patient to more radiation than regular X rays do. CAT scans can also be done without getting something harmful into the patient, so they are less risky than regular X rays.
CAT scans provide exact, detailed information. They can quickly find such a thing as bleeding inside the brain. They are helping to save lives.What is NOT true of a CAT scan?
| A．It is safer than regular X rays. |
| B．It makes use of computer techniques. |
| C．It can stop the action of an organ for a short time. |
| D．It gives clear pictures of active, moving body parts. |
The underlined words “a foreign object”（Para 3）most probably refer to .
| A．a badly injured part inside the body |
| B．a new thing that is unknown to the doctor |
| C．a strange organ that has grown in the body |
| D．an object that gets inside the body by chance |
What is the special use of the latest CAT scanners?
| A．It provides clear photos of moving organs. |
| B．It can take 3-dimension（三维）pictures of inside organs. |
| C．It won’t cause serious skin burns, cancer or other damage to the body. |
| D．It helps to find out what is going on inside a person’s body without opening it up. |
We can infer from this passage that .
| A．patients in front of CAT may suffer from a bit of radiation |
| B．doctors need no opening-up of the body with CAT scanners |
| C．CAT scanners are more expensive than regular X-ray machines |
| D．CAT scanners can take photos of either the whole body or a part of it |
The best title of this passage might be .
| A．the Newest Medical Invention |
| B．New X-ray Machine to Save Lives |
| C．How to Avoid the Damage of X Rays |
| D．Advantages and Disadvantages of CAT Scanners |
Whenever the sun dropped and the blue sky came up, my father and I used to climb the mountain near my house. Walking together, my father and I used to have a lot of conversations through which I learned lessons from his experiences. He always told me, “ You should have goals(目标） like climbing the mountain.” Without the mountain- climbing that we both enjoyed, we couldn’t have enough time to spend together because my father was very busy. I really got a lot from the mountain-climbing. It gave me time to talk with my father and to be in deep thought as well as develop my patience.
Once we climbed a very high mountain. It was so challenging(挑战) for me because I was only ten years old. During the first few hours of climbing, I enjoyed the flowers and trees, and the bird’s singing. But as time passed, I got a pain （痛）in both of my legs. I wanted to give up climbing, but my father said to me, “You can always see a beautiful sky at the top of the mountain, but you can’t see it before reaching the top. Only there can you see all of the nice things, which is just like your life.”
At that time, I was too young to understand his words. But later after that, I got to know the meaning of hope in life. I found myself standing at the top of the mountain, and the sky was as clear as crystal.According to the passage, which advantage that the writer got from climbing the mountain with his father isn’t mentioned?
| A．Deep thought. | B．Exercise. | C．Patience. | D．Communication. |
The underlined word “crystal” in the passage means _______.
| A．岩石 | B．火焰 | C．水晶 | D．寒冰 |
Which of the following is the closest in meaning to the underlined words in the second paragraph?
| A．You will get all you need at the top of the mountain. |
| B．The sky is always as clear as crystal. |
| C．You can find life is full of nice things. |
| D．Never give up half-way. |
We can infer(推断) from the last paragraph that _______.
| A．the writer was very successful in his life |
| B．the writer reached the top of the mountain |
| C．though the writer was young, he could understand his father |
| D．the writer used to stop half-way when he climbed the mountain |
The best title for this passage is ________.
| A．Reaching the Top of the Mountain |
| B．Standing at the Top of the Mountain |
| C．Conversations between Father and Son |
| D．How to Get to the Top of the Mountain |
1. The Dream It is everyone’s dream to work at home or not work at all. You can plan your own hours and work when you want to. There is no more rush hour and no hours that people waste when they get to and from a job every day.
2. The Fact The fact is that this dream can be attained. You can stay at home, work when you want to and make money when you need to. There are plenty of chances for you to make money at home, just by using your computer and the Internet.
3. Start Today! Educate yourself, look closely into all the chances and decide on what works best for you. It will not happen during one night, but you can make the decision today and start to make it happen today.
4. How Could You Do It? Do you have a blog ( 博客) or a personal website like millions of other people? Are you using it to make money? Most of these blogs and website owners are not. But you can do that!
5. _________When you have your computer and the Internet working for you, your businesses will be working for you 24 hours a day, seven days a week. You will make money while you sleep, travel or do whatever you want to do all day long.
6. Get Going! There are many ways you can make money with your computer. And you can begin your stay-at-home businesses with just a little money. What are you waiting for?In which part of a newspaper would you most probably read this passage?
| A．Sports. | B．News. | C．Culture. | D．Business. |
What does the underlined word “attained”in Point 2 mean?
| A．Broken. | B．Realized. | C．Lost. | D．Destroyed ( 毁坏 ). |
What’s the best title for Point 5?
| A．Sleep 24 Hours a Day. | B．Make Money Every moment. |
| C．Play All Day Long. | D．Travel Around the World . |
Which of the following is NOT TRUE according to the passage?
| A．People need a lot of money to start a stay-at-home business. |
| B．People can even use their blogs to make money. |
| C．People can plan their own time when they work at home. |
| D．People can make the best decision and start to make it happy today. |
How is the passage organized（组织）?
| A．By using famous people’s words. |
| B．By giving reasons only. |
| C．By showing a topic （话题）and giving reasons for it. |
| D．By telling old stories. |
There are many colors in nature. But do you know if a color has weight? I think you’ll say “no”. But I am afraid you are wrong. If you don’t believe, you may do a small experiment.
First, put two objects（物体） with the same weight into two boxes. Then cover the box. Third, wrap(裹) one box with a red piece of paper, the other with a white piece of paper. OK. Now hold the boxes with your hand one by one. It is certain that you will think the red one is a little heavier.
Why do you think so? A scientist found that different colors have different weights in a man’s mind. So he did many tests and at last he got the result. That is to say, every color has its own weight in our mind and their order is the same. The heaviest color is red, then blue, green, yellow and white.
The scientist told us that colors also have smell. Can you smell the color? Of course not. Then why did the scientist say so? That is because every color stands for (代表)a kind of light with a certain wavelength(波长). It reaches our brain through sense organs(感觉器官).
According to this discovery, scientists say that people accept the colors they like, and refuse the colors they hate. So your body and mind will be healthy by using the colors you like. Or you’ll be nervous or ill. For example, if you stay in a room with red windows, wallpapers and furniture for two hours, you’ll feel you have been there for four hours. But if the room is blue, you’ll feel you have been there for only an hour. Another example, if a person walks out of a red room and into a blue room, his temperature will fall. That means our body temperature will change with different colors.The idea of the second paragraph is to tell us ________.
| A．a red box is heavier than a white one |
| B．a color has weight in one’s mind |
| C．white paper is lighter than red paper |
| D．you can know the weight of a color by holding it |
Why did the scientist say colors have smell?
| A．Because people can sense(感觉) the light from colors. |
| B．Because we can smell colors with our noses. |
| C．Because every color has its own sweet smell. |
| D．Because every color can give off light of the same length. |
If a person walks from a blue room to a red room, his body temperature will__________.
| A．rise | B．fall | C．stay the same | D．change now and then |
It can be known from the text that________.
| A．colors have order in weight |
| B．colors can change the weight of an object |
| C．people would stay longer in a room with red windows |
| D．colors can affect （影响）our mood （情绪）and health |
This passage is probably a __________.
| A．book review | B．history textbook | C．travel magazine | D．science report |
Sitting on a chair all day in school can make anyone want to move around. So, more and more teachers are letting students have a ball. By sitting on exercise balls instead of chairs , teachers find students’ posture(姿势) and attention improve.
Dottie Pownall, a fifth-grade teacher in West Virginia, USA, has been using balls as chairs since December 2008. “The students love them”, she says. Pownall took a survey(调查) of her students. She found that 80% of the students thought sitting on the balls helped them pay more attention to what they were learning.
The teacher, Pisa Witt, felt so strongly about the use of balls as chairs, she started Witt Fitt. This company encourages the use of the balls. And the company educates not only teachers but also students on how to use them. “Our products are used in 24 states, three provinces in Canada, Puerto Rico (波多黎各) and Japan,” says Witt, “ Research shows that sitting on the balls makes them sit up straighter（直的）. You can slouch(低头垂肩地坐)on a ball,” says Witt, “but it feels bad.” Because the students are moving, their blood (血液) increases. That carries more oxygen( 氧气) to the brain , so the kids have more energy and can pay attention longer.
“Besides, they’re fun.” says Pownall.What will happen if a student sits on a chair all day in school? The student will_________.
| A．pay more attention to his lessons | B．be fun |
| C．like to move around | D．sit up straighter |
How long has Dottie Pownall used the balls?
| A．About four years. | B．Only one year. |
| C．In 2008. | D．Since he was a fifth-grade teacher. |
In how many countries are the balls used as the students’ chairs?
| A．Four. | B．Three. | C．Two. | D．One. |
Teachers choose balls instead of chairs because sitting on balls helps the kids _________.
| A．improve the students’ posture and attention |
| B．slouch on the chairs |
| C．have fun |
| D．Both A and C are correct answers |
Which is better for kids to study in class, sitting on a chair or sitting on a ball?
| A．Sitting on a chair. | B．Sitting on a ball. |
| C．They are the same. | D．We don’t know. |
Human wants seem endless, When a starving man gets a meal, he begins to think about an overcoat; when a manager gets a new sports car, he dreams of country clubs and pleasure boats dance into view.
The many wants of mankind might be regarded as making up several levels. When there is money enough to satisfy one level of wants, another level appears.
The first and most basic level of wants is food. Once this want is satisfied, a second level of wants appears: clothing and some sort of shelter. By the end of World War II these wants were satisfied for a great majority of Americans. Then a third level appeared. It included such items as cars and new houses.
By 1957 or 1958 this third level of wants was fairly well satisfied. Then in the late 1950s a fourth level of wants appeared: the “life-enriching” level. While the other levels mean physical satisfaction—the feeding, comfort, safety and transportation of the human body—this level means mental needs for recognition, achievement and happiness, It includes a variety of goods and services many of which could be called “luxury” items. Among them are vacation trips, the best medical care and entertainment. Also included here are fancy foods and the latest styles in clothing.
On the fourth level, a greater percentage of consumers spending goes to services, while on the first three levels more is spent on goods. Will consumers raise their sights to a fifth level of wants as their income increases, or will they continue to demand luxuries and personal services on the fourth level?
A fifth level probably would be wants that can be achieved by community action. Consumers may be spending more on taxes and crime. After filling our stomachs, our garages, and our minds, we now may seek to ensure the health and safety to enjoy more fully the good things on the first three levels.According to the passage, man will begin to think about such needs as housing and clothing only when _______
| A．he has saved up enough money |
| B．he has grown dissatisfied with his simple shelter |
| C．he has satisfied his hunger |
| D．he has learned to build houses |
It can be inferred from the passage that by the end of World War II most Americans ______
| A．were very rich |
| B．were very poor |
| C．Had the good things on the first three levels |
| D．didn’t own cars |
Which of the following is NOT related to “physical satisfaction”?
| A．A successful career | B．A comfortable house |
| C．A good service | D．A family car |
Which is the main want of man on the fourth level?
| A．The more goods, the better |
| B．The more mental satisfaction, the better |
| C．The more “luxury” items, the better |
| D．The more earning, the better |
The author thinks that a fifth level______
| A．would be a little better than the fourth level |
| B．may be a lot more desirable than the first four |
| C．can be the last and most satisfying level |
| D．will come true if the government takes actions |