Burn Calories in Your Sleep?
The weight-loss world is full of assertions(断言), rarely proved, that some pill can help you “burn calories while you sleep.” But a recent Dutch study reports that it can be done – simply by eating more lean protein(无脂肪蛋白质).
Researchers report for the first time that consuming nearly a third of daily calories as lean protein – for example, lean meats without the skin – speeds up a person’s metabolism(新陈代谢) during sleep and that higher protein intake increases the burning of calories and fat during the day. Plus, when the study’s participants, who were all women of healthy weight, ate more protein, they felt fuller, more satisfied and less hungry than when they consumed a diet with the amount of protein, about 10 percent of calories.
The findings suggest that adding lean protein to your daily food “enables you to reach the same level of satiety(过饱)that you are used to with about 80 percent of your normal energy intake,” notes Margriet Westerterp-Plantenga. “That means you can eat about 20 percent less and still have the same satiety.”
What gives protein its caloric edge? It’s more difficult for the body to metabolize protein than either fat or carbohydrates(糖类). The body also doesn’t store protein as efficiently as it does carbohydrates or fat. So protein is more likely to be burned and that in turn requires more oxygen and helps you feel satisfied in the hours after eating.
But the latest findings don’t mean it’s time to dust off those high-protein diet books. The current study limited fat to about 30 percent of daily calories, and included 40 percent of calories as healthy carbohydrates, including fruit and vegetables. For example, lunch included bread, soy milk, fruit yogurt, tuna in water, tomatoes, cucumbers, feta cheese and salad dressing.
54. According the first paragraph, we know that ______.
A. there’re few studies on weight-loss in the world
B. many studies on weight-loss only cheat customers
C. only few studies are useful for weight-loss
D. there’re few studies about lean protein
55. According to the passage, lean protein can help burn calories while you sleep because ______.
A.it can slow down a person’s metabolism   
B. it’s difficult for the body to metabolize
C.it will not make you feel full  
D. it’s easy to be stored in the body
56. The underlined phrase “dust off” in the last paragraph means ______.
A. get rid of                   B. put away     
C. get ready to rewrite          D. get ready to reuse
57. The passage is mainly to tell readers ______.
A. there is a good diet for weight-losers
B. you can burn your calories in your sleep
C. high-protein diet books will be popular
D. choosing right food is of great use

Almost everyone is afraid of something --- snakes, heights, public speaking and so on.

         It is normal and can even be helpful to experience fear sometimes. In dangerous situations, fear can keep our bodies alert (警醒的) so that we can act quickly to protect ourselves.

         But for some people, fear develops into a “phobia”, which is a strong and unreasonable fear of something. For example, the majority of us feel a little scared when looking down from a tall building. But people with height phobia may have trouble breathing, feel dizzy or turn down a great job just because the company is on the 20th floor.

         Phobias can prevent you from living a normal life. “People with spider phobia would stay out of their home or dormitory room for days if they thought a spider was present,” Katherina Hauner, a researcher at Northwestern University, US, told ABC news. This is why scientists have been trying to find a cure for this disease.

         Since fear comes from experience --- from what we are told, what we see others experience and what happens to us --- some scientists think if they can “rewrite” these unpleasant memories, they might be able to help people overcome their phobias.

         In a study by Hauner and other scientists, participants with spider phobia were asked to first touch a spider with a paintbrush. Seeing that it was not actually dangerous, they then tried touching it while wearing a glove. Finally, they could hold it with their hands.

         Certain medicine has also been found to be helpful. Back in 2010, researchers at the University of Hiroshima, Japan, injected (注射) a special medicine into a fish --- who was afraid of light --- to turn off the fear center in its brain. From then on, the fish no longer feared light.

         While the search for solutions to phobias is making great progress, it’s an open question whether getting rid of fear is good. Some people want to use these methods to make soldiers fight harder in wars by taking away their sense of fear. Dave Smithson of the charity Anxiety UK thinks that’s a bad idea. “It’s fear that prevents us from doing crazy things,” he says. “There’s a name for people who don’t have fear of consequences: psychopaths (精神变态者).

1.The main point of the article is to ___________.

A. show us what kind of role fear plays in our lives

B. discuss if it is good to try to get rid of fear

C. inform us of fear and phobia

D. discuss scientific studies related to fear

2.How does the writer make the meaning of “phobia” clear?

A. By making comparisons.                                     B. By giving examples.

C. By giving data in numbers.                               D. By giving descriptions.

3.Which of the following shows the progress scientists have made in finding solutions to phobia?

A. New medicine can shut off fear centers in animal brains whenever needed.

B. They can use phobias to keep our bodies alert so that we can protect ourselves.

C. They can now reduce the pain which is connected with phobia.

D. They have succeeded in helping some people ignore memories related to phobia.

4.Which of the following would Dave Smithson probably agree with?

A. There is nothing to fear except fear itself.    

B. We should not let fear affect our decisions.

C. Fear is not a completely bad thing.

D. Without fear, everyone would be brave.

 

What kind of sports impressed you most during your childhood? Maybe racing around the playground or skipping rope for hours would bring you pleasure. At that time you weren’t thinking of fitness, you were just thinking of entertainment. But in this age of high-tech home equipment and underused gym memberships, the simple joy of jumping rope has been forgotten. I think rediscovering it probably will give you a total-body exercise.

Although considered an excellent form of exercise, jumping rope has never received widespread acceptance because of two reasons. First,most people recognize jumping rope as an excellent form of cardiovascular (心血管的) exercise, but they also believe that it is simply too difficult. In other words, they don’t think they’ll be able to continue jumping for the near 20 minutes in order to achieve a beneficial physical effect. Second, many regard it as somewhat boring and overly repetitive —not as something fun or enjoyable.

As a matter of fact, jumping rope can be great fun as long as you find a proper way to practise it. Instead of doing the usual two-foot bounce(跳) over and over again, players good at rope-jumping often change their pattern every 10 or 20 jumps. A single bounce, a double –bounce , a skip, a knee-up, side swings , as well as a variety of other easy-to-learn free-style rope-jumping .

Nowadays researchers are discovering that jumping rope also prepares the brain for learning . It is an exercise allowing both brain hemispheres(半球)to perform equally to each other . In short, jumping rope can be a life-long activity requiring little equipment, time and space , yet leading to a much healthier life.

1.The main purpose of the first paragraph is to tell us that         .

A. people would rather have exercise in a gym than do sports outside

B. there seems to be too much advanced equipment for people to use

C. racing around the playground was regarded as children’s favorite sport

D. jumping rope has escaped from people’s memories in modern society

2.One reason that can explain why rope jumping has not spread widely is that_____.

    A. it benefits the cardiovascular system             

B. it is too difficult for people to learn to jump

    C. it is believed to be boring and repetitive        

D. it requires little equipment, time and space

3.The first sentence in Paragraph 3 implies that        in rope jumping .

    A. there is only one proper way to follow            

B. the usual way should not be used again

    C. the easiest way is always the best one            

D. there are different kinds of ways to follow

4.According to the researchers , jumping rope          .

    A. only prepares the brain for learning              

    B. is suitable for students only

    C. helps both brain hemispheres work together        

    D. can be dangerous for old people

5.What is the author’s attitude towards rope jumping ?

    A. He strongly argues against it.

    B. He is in favour of it.

    C. He is sitting on the fence of it .                

    D. He knows little about it .

 

The most common disease in the world is the cold. It often starts with a sore throat(咽部疼痛). You sneeze (打喷嚏) and your nose runs. You usually have a headache, too. Often you have a cough later. It's not a serious disease, but you can feel quite bad.

There isn't a cure (良药 ) for a cold, but you can take medicines to make you feel better. For example, you can take aspirin (阿司匹林) to get rid of your headache. It is good to rest, and to drink a lot of water, too. A doctor once told me, "With the right medicine, a cold will last for seven days. With no medicine, it will go on for a whole week!"

Where does our medicine come from? A long time ago, people understood that some plants made them feel better. They ate the leaves, the roots , the fruit or the seeds  of plants. For example, the juice of lemons (柠檬) makes a sore throat feel better. In modern times, scientists have looked at these plants, and found out which chemicals (化学药品) are in them. Many of our medicines today are made from those chemicals. There are some diseases that we can't cure yet. And nobody has found a cure for old age. But because of modern medicines, the average (平均的) person now lives longer than their grandparents.

1. A cold often starts with________________.

A. a headache     B. a cough   C. a pain in your throat    D. feeling a little cold

2. What should we do when we catch a cold?

A. We only take some medicine.

B. We should rest well, drink much water and have some medicine.

C. We just wait for a whole week.

D. We only need a good rest.

3. What makes a sore throat feel better?

A. The medicine aspirin.          B. A lot of water.

C. Something inside lemons.       D. The root of a plant.

4. What is the real meaning of the doctor's words?

A. There is almost no medicine that can cure the cold.

B. There is some medicine that can cure the cold.

C. You will feel well after a week when you take some medicine.

D. The cold is a serious disease.

 

While all my classmates seem to be crazy about a one-way ticket to Mars, I'd rather say Mars is totally unsuitable for human existence. People won’t have enough food supplies there, and the terrible environment would make it impossible for them to live a long life. Besides, the journey won't be safe. Can anybody explain to me just why people would go to Mars, never to return?  Steve Minear, UK

Here are the things you can think of: the desire to explore a foreign and unique environment, the excitement of being the first humans to open up a new world, the expectation of fame and glory┅. For scientists there is another reason. Their observations and research will probably lead to great scientific achievements.  Donal Trollop, Canada

There are already too many people on the Earth. I think that something before the end of the century, there will be a human colony on Mars. It will happen when people finally realize that two-way trips to the red planet Mars are unnecessary. Most of the danger of space flight is in the launches and landings. Cutting the trip home would therefore reduce the danger of accidents, save a lot of money, and open the way to building an everlasting human settlement in another world. Enough supplies can be sent on ahead, and every two years more supplies and more people will be sent to the new colony. Mars has all the materials for a colony to produce or make everything it needs, and Mars is far more pleasant than the other planets in the outer space.   Paul Davies, USA

1.The main purpose of Steve Minear's writing is_________.    .

    A. to report his classmates' discussion    B. to invite an answer to his question

C. to explain the natural state of Mars    D. to show his agreement on going to Mars

2.Which of the following best states Donal Trollop's ideas?  

    A. There is a plan to send humans to Mars

B. There are many reasons for going to Mars

 C. Scientists become famous by doing research on Mars 

D. It is possible to build an Earth-like environment on Mars

3. Paul Davies points out that______.  

    A. humans need only a one- way ticket to Mars    

    B. two-way trips to mars will be made safe soon

    C. It is easy to reduce the danger and cost of flights to Mars

    D. It is cheap to build an everlasting human settlement on Mars

4.What does Paul Davies think of human existence on Mars? 

    A. Humans will have to bring all they need from the earth

    B. Humans will find Mars totally unsuitable for living

    C. Humans can produce everything they need

    D. Humans can live longer in the colony on Mars

 

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