Your chair is your enemy. That is the conclusion of several recent studies. Among people who sit in front of the television for more than three hours each day, those who exercise are as fat as those who don’t.

　 So what’s wrong with sitting? The answer seems to have two parts. The first is that sitting is one of the most passive things you can do. Compared to sitting, standing in one place is hard work. To stand, you have to tense your leg muscles, and engage the muscles of your back and shoulders; while standing, you often shift from leg to leg. All of this burns energy.

　 You may think you have no choice about how much you sit. But this isn’t true. Suppose you sleep for eight hours each day, and exercise for one. That still leaves 15 hours of activities. Even if you exercise, most of the energy you burn will be burnt during these 15 hours, so weight gain is often the cumulative(累積的) effect of a series of small decisions: Do you take the stairs or the elevator? Do you walk to the corner store, or drive?

　 But it looks as though there’s a more sinister aspect to sitting. Some evidence suggests that when you spend long periods sitting, your body actually does things that are bad for you.

　 Lipoprotein lipase(蛋白脂酶) is a molecule that plays a central role in how the body processes fats. Low levels of lipoprotein lipase are associated with a variety of health problems. Studies in rats show that leg muscles only produce this molecule when they are actively being moved. The result is that when you sit, an important part of your metabolism(新陳代謝) slows down. You may also have a higher risk of suffering from diabetes(糖尿病).

　 Some people have advanced radical solutions to the sitting syndrome(綜合癥): replace your sit-down desk with a stand-up desk, or watch television in a rocking chair. But whatever you choose, know this. The data is clear; look out for your chair.

1．What would be the best title of this passage?

　 A．Become an Athlete to Be Healthy.

　 B．Choose a Better Chair for You.

　 C．How to Speed Up Your Metabolism.

　 D．Stand Up While You Read This.

2．Paragraphs 2 and 3 tell us that　　　　 .

　 A．taking too much exercise harms people’s health

　 B．sitting a lot reduces the benefits of thanking exercise

　 C．people needn’t depend on exercise to keep healthy

　 D．healthy people are those who sit less and stand more

3．Which of the following is the best advice on how to control our weight?

　 A．Exercising at least an hour a day.

　 B．Standing as long as possible.

　 C．Using our energy actively in daily life.

　 D．watching TV in a rocking chair.

4．The author mentions lipoprotein lipase mainly to　　　　　 .

　 A．show that it plays a big part in keeping us healthy

　 B．tell us that it isn’t produced while we are sitting

　 C．suggest that we should take less exercise to be healthy

　 D．prove sitting for long is bad for our body

 

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2012-2013學(xué)年內(nèi)蒙古包頭三十三中高二上學(xué)期期中考試英語試卷（帶解析） 題型：閱讀理解

根據(jù)短文內(nèi)容， 從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。
You may know the benefits of laughter on the mind and spirit. _1___ Norman Cousins used to say that laughter has such a good effect on your body that it is like “inner jogging”.
Mayo Clinic Health Letter reports that laughter aids breathing by incresing your breathing rate.. It can even help clear mucus(黏液) from your lungs.
__2__ It increases circulation(循環(huán)) and improves the flow of oxgen and nutrition to tissues(血管) throught your body..It can help protect you against a heart attack.
__3___ It helps fight off colds, flu,etc. by increasing the concentration of immunolobulin (免疫球蛋白A) in your saliva(唾液) .And it may help control pain by raising the levels of certain brain chemicals.
In addition, it is a natural stress reliever（緩解）.Have you ever laughed so hard that you bent over, fell off your chair, or spit out your food? __4___
I read that a child laughs 400 times a day on average, while an adult laughs only 15 times each day. The good news is that you are allowed more than 15 laughs a day! Go ahead and double it and make it 30 times today. You may begin to notice immediate improvement in your relationships! Then double it again! __5___ People will enjoy being around you as well.
Laughter: it’s the best medicine!
A. Laughter is also good for your heart.
B. Laughter can bring some relief from mental stress.
C. A good, hearty laugh relieves physical tension(緊張) and stress.
D. However, it is confusing why laughter makes people feel so good.
E. A good laugh helps build up your body to protect against diseases
F. You are likely to feel even better and deal with problems more effectively.
G.  However, are you aware of how much a good laugh can help you physically?

查看答案和解析>>

科目：高中英語 來源：2012-2013學(xué)年山西省山大附中高二下學(xué)期期中考試英語試卷（帶解析） 題型：閱讀理解

（共5小題，每小題3分，滿分15分）
根據(jù)短文內(nèi)容,從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)是多余選項(xiàng)。
You may know the benefits of laughter on the mind and spirit. __1__. Norman Cousins used to say that laughter is so beneficial for your body that is like “inner jogging”.
Mayo Clinic Health Letter reports that laughter aids breathing by increasing your breathing rate. It can even help clear mucus (粘液) from your lungs. __2__. It increases circulation and improves the delivery of oxygen and nutrients to tissues throughout your body. __3__. It helps fight off colds, flu etc. by increasing the concentration of immunoglobulin A (免疫球蛋白A) in your saliva (唾液). And it may help control pain by raising the levels of certain brain chemicals.
Furthermore, it is a natural stress reliever. Have you ever laughter so hard that you doubled over, feel off your chair, spit out your food? __4__. The good news is that you are allowed more than 15 laughs a day! Go ahead and double the dose and make it 30 times today. (You may begin to notice immediate improvement in your relationships!) Then double it again! __5__. People will enjoy being around you as well.
Laughter, it's the best medicine.
A. Laughter is also good for your heart.
B. A good laugh helps you build up you body to protect against diseases.
C. However, it is confusing why laughter makes people so good.
D. However, are you aware of how much a good laugh can help you physically?
E. A good laugh relieves physical tension and stress.
F. You cannot maintain muscle tension when you are laughing!
G. You are likely to feel better and deal with problems more effectively.

查看答案和解析>>

科目：高中英語 來源：2012-2013學(xué)年福建省高三第三階段（12月）考試英語試卷（解析版） 題型：單項(xiàng)填空

 -----I’m afraid I’ve broken your chair.

-----          .I can easily get it fixed .

A．You’re welcome.                      B．Not at all.

C．With pleasure.                          D．Never mind.

 

查看答案和解析>>

科目：高中英語 來源：2010-2011學(xué)年黑龍江省高三上學(xué)期期中考試英語卷 題型：閱讀理解

 Some time ago, I discovered that one of my chairs had a broken leg. I didn’t think there would be any difficulty in getting it mended, as there are a lot of antique (古董)shops near my home. So I left my home one morning carrying the chair with me. I went into the first shop expecting a friendly reception (接待). I was quite wrong. The man wouldn’t even look at my chair.

The second shop, though slightly more polite, was just the same, and the third and the fourth. So I decided that my approach must be wrong.

I entered the fifth shop with a plan in my mind. I placed the chair on the floor and said to the shopkeeper, "Would you like to buy a chair?" He looked at it over carefully and said, "Yes, not a bad chair. How much do you want for it?" "Twenty pounds." I said. "OK," he said, "I will give you twenty pounds." "It’s got a slightly broken leg," I said. "Yes, I saw that, it is nothing. "the shopkeeper answered.

Everything was going according to my plan and I was getting excited. "What will you do with it?" I asked. "It will be easy to sell once the repair is done." "I will buy it." I said. "What do you mean? You just sold it to me." "Yes, I know, but I have just changed my mind, I am sorry. I will give you twenty - seven pounds for it." "You must be crazy." he said. Suddenly the penny dropped. "I know what you want. You want me to repair your chair." " You are right," I said, "What would you have done if I had walked in and asked you to mend the chair?" "I would not have agreed to do that. We don’t do repairs, not enough money in it, and too much trouble. But! will mend this for you. Will you pay it for five? ". He was a very nice person and was greatly amused (感到有趣)by the whole thing.

1. We can learn from the passage that in the first shop the writer________.

A. was rather impolite                 

B. was warmly received

C. asked the shopkeeper to buy his chair

D. asked the shopkeeper to repair his chair.

2. The expression" the penny dropped" in the last paragraph means the shopkeeper_________.

   A. changed his mind                        B. accepted the offer

   C. saw the writer’s purpose                   D. decided to help the writer

3.How much did the writer pay for the repair?

   A. 5.             B. 7.               C. 20.               D. 27.

4. From the text, we can learn that the writer was___________.

   A. honest         B. careful           C. smart             D. funny

 

查看答案和解析>>

科目：高中英語 來源：2010-2011學(xué)年湖北黃岡中學(xué)高三最后一次適應(yīng)性考試英語試題 題型：閱讀理解

The small coastal town of Broome, in northwest Australia, is a remote village in the vast countryside.

There are no traffic jams and hardly any roads. There is only the massive Australian wild land, where some houses are 500 miles apart and some driveways are 50 miles long.

There seem to be only two main sources of entertainment out here: the sunset at the beach and Sun Pictures.

Sun Pictures is a very different movie theater：The seats are park benches and deck chairs, but you’re also welcome to sit on the grass.

It is the world’s oldest outdoor movie garden. Sun Pictures was built in 1916 on the other side of the globe from Hollywood. All the big films were shipped here and the lonely country was amazed.

Broome resident Pearl Hamaguchi has never traveled far from home. But in the Sun Pictures chairs, under the deep blue night sky, she has been almost everywhere.

“And we came back excited about Gregory Peck,” she recalled.

This is one of the few places left in the world where you can see two sets of stars at the same time-----one set in the sky, the other in the film.

Each night, dozens of people from around the world line up at the old wooden stand, with no computer in sight, and buy their tickets to the latest films.

Sun Pictures is also a museum, exhibiting projectors(放映機(jī)) that date back to the silent films, a portrait gallery of the famous people who never knew about this place---- even though they came here all the time.

Every once in a while, I’m told, you might find a non-ticket holder in your seat. That’s why it’s always a good idea to shake out your chair to make sure there are no spiders or scorpions.

“We’ve only had a couple of scorpion incidents but no one’s been stung yet,” said Aaron Mestemaker, a tourist visiting from Michigan.

Sun Pictures is a holy hall of movie history and a reminder that air conditioning and carpet are no match for grass and fresh air---even when the lizards steal the scene.

1.. The first two paragraphs want to show that__________.

A．living in Broome is inconvenient

B．the life in Broome is boring

C．few people like to live in Broome

D．Broome is simple but vast

2..Sun Pictures is different from other theaters because _________.

A．it is the most historical outdoor theater in the world

B．the audience can either sit on chairs or on the grass

C．it was built by some constructor from Hollywood

D．a(chǎn)ll the films were imported here from Hollywood

3.. Gregory Peck is most probably the name of_________.

A．a(chǎn) place

B．a(chǎn) film

C．a(chǎn) movie star

D．a(chǎn) country fellow

4.. It can be inferred that the tourists in Broome are most attracted by ________.

A．its peacefulness

B．its beautiful sunset

C．the Sun Pictures

D．the gallery of movie stars

 

查看答案和解析>>

同步練習(xí)冊答案