I had about 10 minutes to exercise before I had to pick up my two older daughters from school yesterday. It was a busier day than usual for me with a couple of meetings besides my regular work.
Years ago, I would have put off my workout and would have left things for the next day. But since it was a busy day as well, I knew that I may not have all that much time either. So, I picked up my kettle-bell (啞鈴) and went to town for 4 minutes.
See, 4 minutes, if that’s all you’ve got, is enough to give your body a great fat-burning exercise. How did I get a killer workout in 4 minutes? I used a training workout discovered 10 years ago by a Japanese Sports Scientist called a TABATA.
It includes 20-second periods of warm-up, followed by 10-second periods of rest and 4-minute straight exercise. How is a 4-minute exercise able to burn fat? It all depends on the quality of work you do. Not on the quantity. Here’s how I did it yesterday.
You should never forget your warm-up. A TABATA workout is 20 seconds of 2-arm Kettle-bell swings, 10 seconds rest, 20 seconds push-ups, and 10 seconds rest. You should do those 4 rounds. That’s it. I was done in a total time of 8 minutes by the time and when I got to school my heart was still pumping pretty hard.
A healthy body is needed for studying and working, and efficiency (效率) is the key to building a great body in the least amount (數(shù)量) of time possible and you can’t get more efficient than a 4-minute workout.
小題1:We can learn from the passage that the author ______.
A．is busy with his workB．has a weak body now
C．has two children in allD．is a manager in a film
小題2:The underlined phrase “went to town” in Paragraph 2 means “_______”.
A．put off doing somethingB．went to a very small city
C．did something with interestD．hated to do something
小題3:What is the most important thing in taking exercise according to the author?
A．The goalB．the qualityC．The quantityD．The method

小題1:A
小題1:C
小題1:B
略
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解


Medical drugs sometimes cause more damage than they cure. One solution to this problem is to put the drugs inside a capsule, protecting them from the body—and the body from them—until they can be released at just the right spot. There are lots of ways to trigger (引發(fā)) this release, including changing temperature, acidity, and so on. But triggers can come with their own risks—burns, for example. Now, researchers in California have designed what could be a harmless trigger to date: shining near-infrared light (NIR, 近紅外線) on the drug in the capsule.
The idea of using light to liberate the drug in the capsule isn’t new. Researchers around the globe have developed polymers (聚合物) and other materials that begin to break down when they absorb either ultraviolet (UV, 紫外線) or visible light. But tissues also readily absorb UV and visible light, which means the drug release can be triggered only near the skin, where the light can reach the capsule. NIR light largely passes through tissues, so researchers have tried to use it as a trigger. But few compounds (化合物) absorb NIR well and go through chemical changes.
That changed last year when Adah Almutairi, a chemist at the University of California, San Diego, reported that she and her colleagues had designed a polymer that breaks down when it absorbs NIR light. Their polymer used a commercially available NIR-absorbing group called o-nitrobenzyl (ONB). When they catch the light, ONB groups fall off the polymer, leading to its breakdown. But ONB is only a so-so NIR absorber, and it could be poisonous to cells when it separates from the polymer.
So Almutairi and her colleagues reported creating a new material for capsules that’s even better.This one consists of a long chain of compounds called cresol groups linked in a polymer. Cresol contains reactive(易反應(yīng)的) components that make it highly unstable in its polymeric form, a feature Almutairi and her colleagues use to their advantage. After polymerizing the cresols, they cap each reactive component with a light-absorbing compound called Bhc. When the Bhcs absorb NIR light, the reactive groups are exposed and break the long polymer into two short chains. Shining additional light continues this breakdown, potentially releasing any drugs in the capsule. What’s more, Almutairi says, Bhc is 10 times better at absorbing NIR than is ONB and is not poisonous to cells.
小題1:According to the passage, which of the following could be the best trigger?
A．Temperature change.B．NIR light.C．Acidity change.D．UV light.
小題2:Why is ONB unsatisfactory?
A．It breaks down when it absorbs NIR light.
B．It falls off the polymer and triggers drug release.
C．It has not come onto the market up till now.
D．It is not effective enough and could be poisonous.
小題3:Which word can be used to complete the following process of changes?
A．protectedB．formedC．exposedD．combined

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

閱讀下面短文，掌握其大意，然后從1—15各題所給的A、B、C和D項(xiàng)中，選出最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。
Have you noticed that lightly rubbing your temple (太陽穴) on your head temporarily ease minor headaches?
I am not a medical doctor, and I have no idea why this   1   . I don’t even know if it really helps with headache pains or if it is only a    2   remedy (療法). Frankly speaking, I don’t even know if it is  3  to do so. But it seems to work just fine for me, at least for   4   headaches.
If you know why it works or if it is safe, please let me know and I will add that information here.
I also    5   that I am not able to   6   rub my temples for a long period of time, if my headaches are persistent. So, I sometimes use a tight   7   or a tight adjustable hat to do the   8   so I don’t have to use my    9  . Just don’t make it too tight, or it will make your headache  10     .
This simple remedy does not   11    migraines (偏頭痛). You should definitely ask your   12   before you try this relief, and especially if you get headaches   13  . It may be a   14   of a major medical problem that needs immediate  15   . I take no responsibility, so go to see a doctor immediately.
1. A. keeps           B. happens       C. works         D. matters       
2. A. medical         B. special        C. social         D. psychological       
3. A. safe            B. strange        C. efficient       D. crazy       
4. A. minor           B. major         C. serious        D. daily       
5. A. consider        B. find          C. fear           D. insist       
6. A. actually         B. really         C. gradually      D. continuously       
7. A. tool            B. dress          C. headband      D. glove        
8. A. work           B. trick          C. test           D. enjoyment       
9. A. doctor          B. medicine       C. knowledge     D. hands       
10.A. worse          B. better         C. bigger         D. uglier       
11.A. mean          B. cure           C. include         D. damage       
12.A. parents        B. doctor         C. friend          D. neighbor       
13.A. gradually       B. never          C. often           D. occasionally       
14.A. sign           B. discovery       C. character       D. topic       
15.A. rest           B. rubbing        C. attention        D. action

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

More and more scientific experiments prove that physical exercise can reduce the dangers of some illnesses in middle-aged persons．Exercise strengthens the heart muscle，reduces blood pressure and help to prevent muscles from changing into fat．Physical exercise is just as important for children．
Exercise and food affect growing speed in young lab animals．Baby mice start running as soon as they are big enough to use an exercise wheel in their cage．If  they get extra food and run a lot，they will grow as much as 1.5 times bigger than normal．
The same differences in growing speed might be found between active and inactive children．Physical exercise helps active children grow faster than inactive children．One experiment shows that the brains of the mice that had enough exercise weighed about 3％more than those of the mice that did not exercise The mice that exercised are much quicker to learn doing new exercise than the mice that did not exercise．
The results of the experiments suppose the theory that exercise can help babies learn to talk and walk sooner than expected．
The good effects of physical exercise are not limited to children and middle-aged people．Exercise continues to be an important part of our lives after we grow old．For example，people over 50 years old begin to lose calcium(鈣) from their bones，which get weaker and can break easily．Physical exercise，however，helps to strengthen the bones and to prevent them from losing calcium．Of course，old people can take medicines to prevent themselves from suffering from losing calcium．But the medicines they take increase the chance of developing some kind of cancer(癌)．So physical exercise is a much safer treatment(治療)．
小題1:From the passage we know that         .
A．mice need to eat more and exercise more
B．children need more exercise than other people
C．old people like to take medicine to treat their illnesses
D．middle-aged people are easy to get fat
小題2:Active children        than inactive children．
A．enjoy walking more
B．a(chǎn)re cleverer and healthier
C．a(chǎn)re stronger but more foolish
D．a(chǎn)re cleverer but weaker
小題3:Why are the bones of old people easy to break according to the passage?
A．Because they are easy to become ill．
B．Because they eat less than other people．
C．Because they have less exercise than other people．
D．there is less calcium in their bones than in those of other people．
小題4:The passage tells people that       .
A．only middle-aged persons can benefit from physical exercise
B．physical exercise can do good to both the middle-aged and children
C．people of different ages can all benefit from physical exercise
D．physical exercise is the safest treatment for losing calcium

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Europe is now the biggest market for organic food in the world, having grown by 25 percent a year over the past 10 years. Denmark’s agriculture minister is herself an organic farmer. The UK market for organic food grew by 55 percent in 2000, while the food market as a whole grew by only one percent. Yet only seven percent of British shoppers account for nearly 60 percent of organic sales. However popular the idea of organic farming may be, it is still an interest for only a few people.
So what makes the idea of organic farming popular? Organic farming means farming with natural materials, rather than with man-made fertilizers or pesticides. Organic farmers rely on many  methods — such as crop rotation (農(nóng)作物的輪作) and the use of resistant（有抵抗力的） varieties, because they are necessary for organic farmers to compensate for the shortage of man-made chemicals.
Organic farming is often supposed to be safer than traditional farming for the environment. Yet after a long research on organic farming worldwide for a number of years, science continues to be against this opinion. The House of Commons committee on agriculture publicized that, even with complete research work, it would fail to find any scientific evidence to prove “that any of claims （宣稱） made for organic farming is always true”.
However, the talk about the benefits of organic farming is going on. This is partly because many people depend on their individual farm, the soil, the weather, and so on.
小題1:The first paragraph mainly tells us _____.
A．organic farming has been performed only in Europe over the past 10 years
B．governments of European countries have cared less about organic farming
C．organic farming is far from being as popular as expected
D．European countries need organic food more than the other countries in the world
小題2: The underlined words “compensate for” in the second paragraph probably mean “________”.
A．a(chǎn)rgue forB．care forC．struggle forD．pay for
小題3: What can we know about organic farming?
A．It refers to farming with natural materials, instead of chemical fertilizers.
B．It refers to farming with chemical fertilizers rather than natural fertilizers.
C．It refers to farming with soil rather than any other thing.
D．It refers to growing crops with man-made fertilizers and pesticides.
小題4:According to the third paragraph, _____.
A．organic farming is safer than traditional farming for the environment
B．the idea that organic farming is safer has not been proven by science
C．organic farming is accepted by the UK’s House of Commons committee
D．organic farming is preferred to traditional farming
小題5:Which of the following is TRUE, according to the passage?
A．The UK’s agriculture minister is an organic farmer.
B．Organic farming is popular with young people.
C．Farmers make use of many different kinds of methods to improve the organic sales system.
D．Ninety-three percent of British shoppers don’t buy organic products.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Pregnancy(妊娠) and childbirth kill more than 536,000 women a year. More than half of the cases happened in Africa, according to the World Health Organization. In fact, most of the deaths are preventable with basic medical care.
The five leading causes are bleeding, infection, high blood pressure, long­time labor and bad abortions (流產(chǎn)). Mothers' deaths from such causes were largely reduced nearly a century ago in developed countries.
Experts say that what kill many women are “the three delays”— the woman's delay in deciding to go to the hospital, the time she loses traveling there and the hospital's delay in starting treatment. Only about 15 percent of births have dangerous complications(并發(fā)癥)．
Women lack education and information about birth control. Husbands and in­laws, may decide where a woman gives birth and insist that she stay at home to save money. However, there is no single solution to a problem with so many factors—shortages of doctors, nurses, drugs, equipment, roads and transportation—though hospital officials are trying many things now.
One stopgap measure to solve the problem for the present has been to train assistant medical officers, to perform certain operations. Some African countries are now struggling to train more assistants and midwives (接生婆) , and provide places for pregnant women to stay near hospitals.
But there is a long way to go. Only 20 percent of women in the continent give birth at the hospital. More than 50 percent stay at home to give birth, and the rest go to local clinics that cannot handle emergencies.
小題1:Which is not included in the five leading causes of women's deaths during pregnancy and childbirth?
A．Infection.B．High blood pressure.
C．Traveling long distances.D．Bleeding.
小題2:The underlined word “stopgap” probably means “________ ”in the passage.
A．finalB．temporaryC．effectiveD．instant
小題3:What can we learn from this passage?
A．The governments of African countries have to take more effective measures to save pregnant women.
B．Developed countries should help African countries reduce mothers'deaths.
C．The husbands in poor countries should take responsibility for their wives'deaths.
D．Most problems that cause women's deaths during pregnancy and childbirth can be treated or prevented.
小題4:What is the author's attitude towards the future of preventing women's deaths during pregnancy and childbirth?
A．Positive.B．Negative.C．Objective.D．Subjective.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

You can't escape the message that smoking is bad for you.But what if one or both of your parents smoke?You might be worried about their health,sick of smelling the smoke,or even a little embarrassed(尷尬的) by it.You can't order your mom or dad to stop smoking ,but you can encourage them to quit.There are lots of good reasons.Here are some you can mention:
*Smoking will hurt their health.
*Smoking creates secondhand smoke,which you don't like .
*Smoking will make it hard for them to keep up with you because they might run out of breath easily.
If you think it will help,you could print out articles like this one to give it to your mom or dad. But what if your parent gets angry with you for bringing up the topic of smoking?People don't like to be reminded that they are doing something unhealthy,so it's possible that your parents will be insulted or angry,especially if they're worried they won't be able to quit.Maybe they have tried before and failed.
Remember to be kind and respectful when you discuss smoking with your mom or dad. Also rememeber that it is difficult to quit.Some people try several times before they're able to quit for good. Instead of yelling at the them,tell them that you love them and want them to enjoy many healthy years ahead. In time,your mom or dad may realize you are right about smoking .And if they do agree to stop smoking,be their biggest supporter.Ask if there's anything you can do to help them when they feel the urge to smoke.Maybe you could go for a walk,do a puzzle,or listen to music together.As they reach milestones,such as a month without smoking,be sure to celebrate the achievement.Way to go,mom!Way to go,dad!
小題1: In the first paragraph,the author intended to tell us______.
A．the reasons you have for your parents' giving up smoking
B．the great damage smoking can cause to secondhand smokers
C．most smokers are includable and stubborn
D．smoking does harm to smoker's health
小題2: If you bring up the topic of smoking directly,_________.
A．the smokers will accept your advice willingly
B．the smokers may become very annoyed at once
C．the smokers will take your words into account
D．the smokers will put you in an embarrassing situation
小題3:The underlined word "milestones" in the first paragraph means________.
A．stones which are miles away
B．a(chǎn)greements signed by both sides
C．practical tools for stopping smoking
D．a(chǎn)chievements gained with great efforts
小題4:The author wrote the text for_______.
A．school teachersB．health experts
C．sons and daughtersD．medical scientists

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Bend over, take a deep breath and drink some water! This is just one of the hundreds of tips you might get if you have the hiccups(打嗝). Hiccups are so mysterious. We really don’t know why they start and why they stop.
Everyone has a favorite cure for a case of the hiccups. Some people think that a good scare is necessary to get well. Others eat a teaspoon of sugar. Still others drink a glass of water with a knife in it.
An American man named Jack O’Leary claimed to have hiccupped 160 million times over a period of eight years. He tried 60,000 cures, but none of them worked. Finally he prayed to Saint Jude, the saint of Hopeless cases, and his hiccupping stopped immediately.
It took a British plumber eight months to cure his hiccups. People from all over the world wrote him letters with suggestions for getting well. He tried them all, but the hiccups continued. Finally, he drank a “secret’’mixture someone had sent him. By that evening his hiccups were gone. Why did these cures work for these two men? No one really knows. But people who have studied many cases of hiccups have an idea. Hiccups usually go away if you believe in the cure.
小題1:
________might be the best cure for hiccups.
A．Special pillsB．A spoonful of saltC．Cold waterD．What you believe in
小題2:
The plumber spent________in stopping his hiccups.
A．4 hoursB．2 daysC．8 monthsD．8 years
小題3:
According to the passage, which of the following is TRUE?
A．We know why the hiccups start, but we don’t know how to stop them.
B．Saint Jude is an expert in curing the hiccups.
C．The British plumber drank a secret mixture given by an experienced doctor and then became well.
D．Some people think that a good scare is a cure for a case of hiccups.
小題4:
What is the main idea of this passage?
A．Different ways to stop hiccupsB．What makes hiccups happen
C．How to get hiccupsD．Jack O’Leary’s hiccups

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

From babies to body builders, we all have muscles. They grow, they bulge(鼓起), they stretch they stretch and sometimes they even painfully pull. But for all the work they do for us, we are still unable to crown one as "the strongest muscle."
Instead, a few muscles could claim the title, depending on how strength is measured.
If the title goes to the muscle that can exert(產(chǎn)生) the most force, the victor would be the soleus（小腿肚�。�, according to Gray's Anatomy（解剖學(xué)）. Without this muscle, we wouldn't be able to stand, walk, run or shake our bodies on the dance floor. If the soleus was not continuously pulling, we would always be falling over ourselves (although some of us tend to do that from time to time anyway).
But perhaps the title should go to the muscle that exerts the most pressure. Pressure is different from force — pressure takes into account the area over which a force is exerted. The muscle that takes the prize for delivering the greatest amount of pressure is the masseter, or the jaw muscle, according to the book "Clinical Oral Science" (Reed Educational and Professional Publishing, 1998).
In 1986, Richard Hofmann of Lake City, Fla., achieved a bite strength of 975 pounds (442 kilograms) for two seconds, setting a Guinness Record. Talk about jaw dropping! The jaw is able to clench（咬緊） and chew because of the masseter muscle.
Others may argue the muscles used in childbirth are the most powerful.
When it comes to versatility, perhaps the tongue is the strongest muscle. Its combination of elasticity（伸縮性） and forcefulness gives us the ability to speak, eat and kiss – all things very desirable on a first date. However dexterous（靈巧的） it may be though, its power does not match that of muscles such as the soleus.
If slow and steady wins the race, the heart is certainly a contender for the title. When it contracts, the muscle pumps about 2 ounces (59 milliliters) of blood, and is constantly working over a lifetime. Beating about 40 million times a year, a person's heart will beat approximately 2.5 billion times by the time of their 70th birthday.
小題1:According the passage, the underlined word “contender” in the last paragraph is closet in meaning to “          ”.
A．failureB．partnerC．muscleD．competitor
小題2:Which would be t he best title for the passage?
A．What’s the strongest muscle in the human body?
B．who is the strongest person in the world?
C．What are the functions of different muscles?
D．What are the standards of the strongest muscle?
小題3:According to the passage,       .
A．Without the soleus, we could still stand, walk, run or shake our bodies on the dance floor
B．a(chǎn) few muscles could be the winners, according to different measures
C．the muscles used in childbirth are the most powerful
D．tongue is the strongest muscle for delivering the greatest amount of pressure
小題4:What would be discussed in the following paragraph?
A．Another possible strongest muscle.B．the conclusion of the strongest muscle.
C．The functions of different muscles.D．the Guinness record of strongest muscle.

查看答案和解析>>

同步練習(xí)冊(cè)答案