E
Sweet potatoes are fat-free, high in fiber and full of the vitamins that research suggests reduce your risk of life-shortening diseases. To stay healthy, we must eat more fruits and vegetables, and sweet potatoes are a great source of beta carotene(胡萝卜素) and other carotenoids(which the body turns into vitamin A). According to a study of the diets of almost 90,000 nurses, eating about one cup a day of fruits and vegetables rich in carotenoids can cut your risk of stroke in half and reduce your risk of heart disease by 22 percent. Other research suggests beta carotene protects against breast, lung and stomach cancers.
Beta carotene is the most famous member of the carotenoids family. In face, a medium-sized sweet potato contains nearly 12mg of beta carotene(anti-aging experts usually suggest 6 to 11 mg per day). Sweet potatoes are also a low-fat source of vitamin E. Research has linked high E diets with a lower risk of heart disease. This vitamin pill in an orange jacket also packs a vitamin C punchit which has more C than apricots (a kind of fruit). Research suggests that vitamin C protects against ailments (小疾) ranging from cataracts(an eye disease) to cancer. In addition, a UCLA (University of California Los Angeles) study linked high vitamin C diets with a longer life. Recent studies have showed that antioxidant Vitamins C, E and beta carotene fight a fierce battle against free radicals (自由基），which cause cell damage and lead to various illness. Therefore, to keep fit, eat more sweet potatoes.
72. According to the text, there exists a lot of ______in sweet potatoes.
A. fiber, beta carotene, other carotenoids, Vitamin E and C
B. beta carotene, other carotenoids, fiber, Vitamin A and E
C. Vitamin A, beta carotene, fiber, Vitamin E and C
D. beta carotene, other carotenoids, Vitamin A and E
73. This text as a whole suggests that eating sweet potatoes can help______.
A. cut your risk of stroke and heart disease
B. protect against breast, lung and stomach cancers
C. protect against ailments ranging from cataracts to cancers
D. you stay healthy and reduce your risk of life-shortening diseases
74. “ This vitamin pill in an orange jacket” in the passage refers to______.
A. sweet potato B. vitamin C pill
C. vitamin E pill D. beta carotene
75. The best title of this passage might be______.
A. On sweet potatoes B. The vitamin superstar
C. Beta carotene and vitamins D. Diet and disease
If you go into the forest with friends，stay with them. If you don’t，you may get lost. If you get lost, this is what you should do. Sit down and stay where you are. Don’t try to find your friends—let them find you. You can help them find you by staying in one place. There is another way to help your friends or other people to find you. You can shout or whistle three times. Stop. Then shout or whistle three times again. Any signal given three times is a call for help. Keep up shouting or whistling. Always three times together. When people hear you，they will know that you are not just making a noise for fun. They will let you know that they have heard your signal. They will give you two shouts or two whistles. When a signal is given twice, it is an answer to a call for help. If you don’t think that you will get help before night comes, try to make a little house with branches. Make yourself a bed with leaves and grass. When you need some water, you have to leave your little branch house to look for it. Don’t just walk away. Pick off small branches and drop them as you walk in order to go back again easily. When you are lost, the most important thing to do is to stay in one place.Which signal is a call for help？
| A．shouting here and there | B．crying twice |
| C．shouting or whistling three times together | D．whistling every where in the forest |
When you hear two shouts or two whistles，you know that ____________________.
| A．someone is afraid of an animal | B．people will come to help you |
| C．someone needs help | D．something terrible will happen |
What’s the meaning of the underlined sentence？
| A．Leave branches to find your way back | B．Pick off branches to build another house |
| C．Use branches to make a bed | D．Drop branches to look for water |
The main idea of the passage is________________________.
| A．how to travel in the forest |
| B．how to spend the night in the forest |
| C．what you should do if you want to get some water |
| D．what you should do if you are lost in the forest |
From Monday until Friday most people are busy working or studying, but in the evenings and on weekends they are free to relax (放松) and enjoy themselves. Some watch TV or go to the movies; others take part in sports. It depends on individual interests. There are many different ways to spend our spare time.
Almost everyone has some kinds of hobbies. It may be anything from collecting stamps to making model airplanes. Some hobbies are very expensive, but others don’t cost anything at all. Some collections are worth a lot of money; others are valuable only to their owners.
I know a man who has a coin collection worth several thousand dollars. A short time ago he bought a rare (稀有的) fifty-cent piece worth $250! He was very happy about his buying and thought the price was reasonable (合理的). On the other hand, my youngest brother collects matchboxes. He has almost 600 of them but I doubt (怀疑) if they are worth any money. However, to my brother they are very valuable. Nothing makes him happier than to find a new matchbox for his collection.
That’s what a hobby means, I guess. It is something we like to do in our spare time simply for the fun of it. The value in dollars is not important, but the pleasure it gives us is.The underlined word “individual” in the first paragraph most probably means____ .
| A．different | B．strange | C．secret | D．one's own |
In the writer's opinion, ____.
| A．all hobbies are very expensive | B．some hobbies don't cost anything |
| C．hobbies are worthless | D．hobbies are valuable to everybody |
Something that one enjoys doing in one's spare time is a____ .
| A．job | B．pleasure | C．hobby | D．habit |
Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.
A. Reasons for the use of Podcasting
B. Definition and origin of Podcast
C. Importance of Podcasting at school
D. Advantage of Podcasts over other audio media
E. Podcasts—a further step from voice recordings
F. Devices needed for Podcasting_______
Recently a group of second-graders visited our school library to work on a “holidays around the world” project. The children created pictures showing holiday customs and then created voice recordings explaining what they drew. The incident showed very clearly the effectiveness of student-created voice recordings. Now imagine taking things one step further and creating Podcasts in a classroom setting.________
The term Podcast refers to an audio recording, linked to the Web, that can be downloaded to a personal MP3 player. The word is created from broadcast and from iPod ---the wildly popular MP3 player from Apple.________
Using audio with students isn’t new, of course. Teachers have used audiobooks at listening centers and recorded student voice on tape or CD for many years. Voice and music are the original media for teaching. Podcasts, however, can reach a much wider audience in a time frame outside the school days. Booktalking, an old way of getting kids excited about books, gets a tech assistance with Podcasting. Students can do some booktalking themselves; book review Podcasts seem to be another natural way for students to share what they know, providing an alternative to the book report.________
There are a number of excellent reasons for using Podcasting. Teachers made audio Podcasts, including visuals or video clips for any content area instruction and review. Some teachers have begun to record themselves teaching important concept
s; this creates an account of information online for kids to access when they’re stuck on a homework assignment. Audio and video files can also function as assessment tools. Imagine being a classroom teacher in September who can actually hear how his or her students were reading in June the school year before.________
You don’t need an iPod to make a Podcast. If you have a computer, a microphone, and some free software, you can make a Podcast. While an MP3 player is a popular and useful gadget, your audience doesn’t need MP3 players to listen, either: your students and their families can use the computer to play back what you’ve recorded.
There are still many things that Peter Cooke would like to try his hand at — paper-making and feather-work are on his list. For the moment, though, he will stick to the skill that he has been delighted to make perfect over the past ten years: making delicate and unusual objects out of shells.
As he leads me round his apartment showing me his work, he points to a pair of shell-covered ornaments(装饰品) above a fireplace. “I shan’t be at all bothered if people don’t buy them because I have got so used to them, and to me they’re lovely. I never meant to sell my work commercially. Some friends came to see me about five years ago and said, ‘You must have an exhibition — people ought to see these. We’ll talk to a man who owns an art gallery’”. The result was an exhibition in London, at which 70 per cent of the objects were sold. His second exhibition opened at the gallery yesterday. Considering the enormous prices the pieces command —around ￡2,000 for the ornaments — an empty space above the fireplace would seem a small sacrifice for Cooke to make.
There are 86 pieces in the exhibition, with prices starting at￡225 for a shell-flower in a crystal vase. Cooke insists that he has nothing to do with the prices and 
is cheerily open about their level: he claims there is nobody else in the world who produces work like his, and, as the gallery-owner told him, “Well, you’re going to stop one day and everybody will want your pieces because there won’t be any more.”
“I do wish, though,” says Cooke, “that I’d taken this up a lot earlier, because then I would have been able to produce really wonderful things — at least the potential would have been there. Although the ideas are still there and I’m doing the best I can now, I’m more limited physically than I was when I started.” Still, the work that he has managed to produce is a long way from the common shell constructions that can be found in seaside shops. “I have a miniature(微型的) mind,” he says, and this has resulted in boxes covered in thousands of tiny shells, little shaded pictures made from shells and baskets of astonishingly realistic flowers.
Cooke’s quest(追求) for beautiful, and especially tiny, shells has taken him further than his Norfolk shore: to France, Thailand, Mexico, South Africa and the Philippines, to name but a few of the beaches where he has lain on his stomach and looked for beauties to bring home. He is insistent that he only collects dead shells and defends himself against people who write him letters accusing him of stripping the world’s beaches. “When I am collecting shells, I hear people’s great fat feet crunching(嘎吱嘎吱地踩) them up far faster than I can collect them; and the ones that are left, the sea breaks up. I would not dream of collecting shells with 
living creatures in them or diving for them, but once their occupants have left, why should I not collect them?” If one bases this argument on the amount of luggage that can be carried home by one man, the beauty of whose work is often greater than its natural parts, it becomes very convincing indeed.What does the reader learn about Peter Cooke in the first paragraph?
| A．He has produced hand-made objects in different materials. |
| B．He hopes to work with other materials in the future. |
| C．He has written about his love of making shell objects. |
| D．He was praised for his shell objects many years ago. |
When mentioning the cost of his shell objects, Cooke ____.
| A．cleverly changes the subject. |
| B．defends the prices charged for his work. |
| C．says he has no idea why the level is so high. |
| D．notes that his work will not always be so popular. |
The “small sacrifice” in Paragraph 2 refers to _________.
| A．the loss of Cooke’s ornaments | B．the display of Cooke’s ornaments |
| C．the cost of keeping Cooke’s ornaments | D．the space required to store Cooke’s ornaments |
What does Cooke regret about his work?
| A．He is not as famous as he should have been. | B．He makes less money than he should make. |
| C．He is less imaginative than he used to be. | D．He is not as skillful as he used to be. |
What does the reader learn about Cooke's shell-collecting activities?
| A．Not everyone approves of what he does. |
| B．Other methods might make his work easier. |
| C．Other tourists get in the way of his collecting. |
| D．Not all shells are the right size and shape for his work |
Have you ever had the strange feeling that you were being watched? You turned around and, sure enough, someone was looking right at you!
Parapsychologists(灵学家) say that humans have a natural ability to sense when someone is looking at them. To research whether such a “sixth sense” really exists, Robert Baker, a psychologist(心理学家) at the University of Kentucky, performed two experiments.
In the first one, Baker sat behind unknowing people in public places and stared at the backs of their heads for 5 to 15 minutes. The subjects（受试者）were eating, drinking, reading, studying, watching TV, or working at a computer. Baker made sure that the people could not tell that he was sitting behind them during those periods. Later, when he questioned the subjects, almost all of them said they had no sense that someone was staring at them.
For the second experiment, Baker told the subjects that they would be stared at from time to time from behind a two-way mirror in a laboratory setting. The people had to write down when they felt they were being stared at and when they weren’t. Baker found that the subjects were no better at telling when they were stared at and when they weren’t. Baker found that the subjects were no better at telling when they were started at than if they had just guessed.
Baker concludes that people do not have the ability to sense when they’re being stared at. If people doubt the outcome of his two experiments, said Baker, “I suggest they repeat the experiments and see for themselves.”The purpose of the two experiments is to _______.
| A．explain when people can have a sixth sense |
| B．show how people act while being watched in the lab |
| C．study whether humans can sense when they are stared at |
| D．prove why humans have a sixth sense |
In the first experiment, the subjects _______.
| A．were not told that they would be stared at | B．lost their sense when they were stared at |
C．were not sure when they woul d be stared at |
D．were uncomfortable when they were stared at |
The underlined word “outcome” in the last paragraph most probably means ______.
| A．value | B．result | C．performance | D．connection |
What can be learned from the passage?
| A．People are born with a sixth sense. |
| B．The experiments support parapsychologists’ idea. |
| C．The subjects do not have a sixth sense in the experiments. |
| D．People have a sixth sense in public places. |