If you're 70 and overweight, you may live longer

A few extra pounds might help you live longer if you're past your prime(壯年) but otherwise healthy, a new study finds.
    Physicians routinely follow guidelines issued by the World Health Organization. Because weight depends on height, they use a standard measure called body mass index (BMI), which is calculated as the weight in kilograms divided by the height in meters squared.
    Healthy weight is defined as a BMI anywhere between 18.5 and 24.9 in adults, whereas 25 to 29.9 is overweight and 30+ is obese.
    The new study suggests that in the elderly, these boundaries may be too narrow. While no one is questioning that extra fat poses health risks in young and middle-aged adults, it may reduce the impact of frailty and old age, geriatrician(老年醫(yī)學專家) Dr. Thomas Yoshikawa told Reuters Health.
    So far, nobody knows exactly how BMI affects lifespan in older people. Some researchers speculate that it acts as an energy reserve that can help the elderly cope with illness.
    For the study, Australian researchers followed more than 9,000 men and women who were between 70 and 75 years old at the beginning. The participants reported their height and weight as well as various factors related to health and lifestyle. About 33 percent of the women and 44 percent of the men were overweight.
    Over 10 years, more than 2,000 of the participants died. Women who had an active life and didn't smoke were the most likely to be alive at the end of the study.
    But neither health nor lifestyle could fully explain why overweight people of both sexes survived longer than their normal-weight peers, who fared no better than obese individuals. In terms of survival, the best BMI was between 26 and 27, well within the overweight range.
    The new results agree with earlier research showing that fat may be beneficial in old age.

68．We can learn from the passage that         ．

A. the heavier one is, the better              B. we shouldn’t lose weight when old

C. one should keep his weight within the recommended range

D. we shouldn’t worry about our weight if we are slightly fatter than normal when old 

69．According to the passage, if a person is 1.5 metres in height and 67.5 kg in weight, his BMI is________.

  A．30            B．25           C．45         D． 28

70. What does the author want to tell us most?

A. Fatness has little to do with diseases in old age.        

B. Fatness is not always bad.

C. Fatness may be beneficial instead of harmful in old age.

D. Overweight people of both sexes survive longer than their normal-weight peers.

練習冊系列答案
相關習題

科目：高中英語 來源：2015屆山東省濟南市高一上學期期末考試英語試卷（解析版） 題型：閱讀理解

Newcastle, one of the fastest developing cities in the United Kingdom, is beginning to draw tourists from all corners of Europe. It’s said most visitors come here to see the famous soccer team play. The mood of the locals is often changed by the success or failures of the local team.

Newcastle’s most popular place is the Gate, which is in the center of the city and has many attractions including bars, restaurants, sports bars, pubs and so on. During a home game it becomes a real home to happiness.

Culture and local history lovers can make their dreams come true by taking one of the local city tour buses. They come and leave every few minutes and stop at all the important historical sites in the city. Also the seats and the environment on the buses are comfortable. It’s the best way to see the city without tiring yourself out or getting cold. Places such as the Hancock Museum and Millennium Bridge are must-see attractions. But be careful if you’re short of time. Newcastle is a big place, so you should be prepared to kill a few hours on one of these buses.

If you want to watch the local team play soccer in the St. James Park, remember to book a ticket as early as possible. The locals are crazy soccer fans, and you’ll find it hard to get a ticket if you don’t wait in the queue early.

As you can see, Newcastle is a fantastic city with so much to be offered and so many things to see. You’re sure to have a wonderful time here!                                   

1.The purpose of the text is to ________.

A．a(chǎn)dvertise the local soccer team

B．encourage people to visit Newcastle

C．introduce the lifestyle in Newcastle

D．describe the long history of Newcastle

2.Most visitors come to Newcastle in order to ________.

A．watch its soccer team play                B．take the local tour buses

C．visit the Hancock Museum                 D．have a big meal in restaurants

3.If you want to learn about the history and culture of Newcastle, you _______.

A．should go to the Gate                    B．can go on a city tour

C．must visit St James Park                   D．must drive your own car

4.The underlined word “They” in Para 3 refers to ______.

A．history lovers                          B．local people

C．city tour buses                         D．local soccer teams

 

查看答案和解析>>

科目：高中英語 來源：2012-2013學年河南省分校高二第二次階段考試英語試卷（解析版） 題型：閱讀理解

Here are six steps to better studying.

Pay attention in class

Do you have trouble paying attention in class? Are you sitting next to a loud person? Tell your teacher or parents about any problem that is preventing you from paying attention.

Take good notes

Write down facts that your teacher mentions or writes on the board. Try to use good handwriting so you can read your notes later. It’s a good idea to keep your notes organized by subject.

Plan ahead for tests and projects

Waiting until Thursday night to study for Friday’s test will make it hard to do your best. One of the best ways to make sure that doesn’t happen is to plan ahead. Write down your test dates. You can then plan how much to do after school each day, and how much time to spend on each topic.

Break it up

When there’s a lot to study, it can help to break things into several parts. Let’s say you have a spelling test on 20 words. Instead of thinking about all of the words at once, try breaking them down into five-word groups and work on one or two different groups each night.

Ask for help

You can’t study effectively if you don’t understand the material. Be sure to ask your teacher for help. If you’re at home when the confusion occurs, your morn or dad might be able to help.

Sleep tight

So the test is tomorrow and you’ve followed your study plan—but suddenly you can’t remember anything! Don’t panic. Your brain needs time to digest all the information you’ve given it. Try to get a good night’s sleep and you’ll be surprised by what comes back to you in the morning.

1.We know from the passage that a loud person is       .

A．a(chǎn) student who always answers questions loudly in class

B．someone who likes to talk with others in a loud voice

C．a(chǎn) student who likes speaking with others in class

D．a(chǎn) person who makes a lot of noise in public places

2.According to the author, which of the following is an effective studying method?

A．Don’t try to review everything you have learned in one go.

B．Try to review what you’ve learned in one go.

C．To read all your notes the night before the test.

D．Try to remember everything on the first try.

3.If you don’t understand what you have learnt, you can       .

A．read your notes over and over again

B．turn to people around you for help

C．put aside the material for later review

D．a(chǎn)sk your teacher to explain it the next day

4.By saying “Sleep tight”, what does the author mean?

A．Sleep again after waking up.

B．Sleep holding your breath deep.

C．Get a good night’s sleep.

D．Go to sleep early every night.

 

查看答案和解析>>

科目：高中英語 來源：2012屆廣東省廣州市高二下學期期末教學質(zhì)量檢測（七區(qū)聯(lián)考）英語題 題型：信息匹配

閱讀下列應用文及相關信息，并按照要求匹配信息。請在答題卡上將對應題號的相應選項字母涂黑。以下是一些電子產(chǎn)品的介紹：

A.  Microsoft Office: This computer software package provides you with everything for your business or study needs. Whether you need to write a report, do your business accounts, design a web page or stay in touch through email, Office can do it all and much more. Cost $740

 

B.  Motorola L7i mobile phone: Web enabled phone that allows you to surf the net anywhere at anytime, with 2 mega pixel camera built in for photo and video. 1 GB memory to store large music and movie files. Cost $530

 

C.  Lenovo laptop computer X61: This ultra-portable notebook is ideal for mobile users such as travellers and businessmen because it is lightweight (only 1 kilo) and offers extremely long battery life (up to 8 hours before recharging is necessary). Cost $1,200

 

D.  Supersonic MP4 Player: Multimedia player is just what you need to stay entertained wherever you go. Use the 1.5-inch screen as a video player or to play games. With 15GB of storage you can also store and listen to thousands of your favourite songs with just tile click of a button. Cost $140

 

E.  Nintendo Game Boy: This portable video game system allows you to have fun wherever you are. With thousands of different games available to play on this system you are sure to never get bored. Cost $240

 

F.  Sony Thinline Digital TV: This TV provides the crystal clear picture you expect from Sony and is only 2 cm thick. Has 120GB built in memory allowing you to record and store hundreds of hours of your favourite programmes with just the touch of a button. Cost: $3,500

下面是關于一些商店的簡介，請匹配商店與它所銷售的產(chǎn)品：

1.One-Stop Computer Centre: We are specialists in Dell and Samsung computers, offering a full range of desktops and notebooks for these two brands. We also stock a huge selection of computer softwares including all Microsoft, Sun Microsystems and Adobe applications.

 

2.Joe's Discount Electronics: Joe guarantees to provide you with the cheapest electronic products anywhere in the city. We may not have famous name brands but if you are looking for a reliable TV, mobile phone, MP4 player at unbeatable prices then Joe's is the place for you.

 

3.The Digital Warehouse: We're the city's leading electronic games store, offering the latest systems from Microsoft (Xbox), Sony (Play Station 3) and Nintendo (Wii, Game Boy). We also offer a huge selection of games for each system, and if we don't have we will order it for you.

 

4.HiFi House: If you're looking for a new music system or the latest in television technology then we are for you. Get honest and reliable advice from our sales team on the right products for you. We only sell quality brands so your satisfaction is guaranteed.

 

5. The Mobile King: Are you always on the move? Do you need to take your work with you wherever you go? Is your back sore from carrying around your old heavy laptop computer? Then come to us to get the lightest and most powerful laptop computers from brand names such as Toshiba, Sony and Lenovo.

 

查看答案和解析>>

科目：高中英語 來源：2008年普通高等學校招生全國統(tǒng)一考試江西卷英語試題 題型：閱讀理解

Most people, when they travel to space, would like to stay in orbit for a few days of more. And this stands to reason, if you’re paying $20,000 for your trip to orbit! Strain order for tourism to reach its full potential there’s going to be a need for orbital accommodation---or space hotels. What would a space hotel actually be like to visit? Hotels in orbit will offer the services you expect from a hotel------private rooms, meals, bars. But they’ll also offer two unique experiences: impressive views----of Earth and space---and the endless entertainment of living in zero gravity---including sports and other activities that make use of this.

The hotels themselves will vary greatly----from being quite simple in the early days to huge luxury structure at a later date. It’s actually surprising that as later as 1997, very few designs for space hotels were published. This is mainly because those who might be expected to design them haven’t expected launch costs to come down far enough to make them possible.

Lots of people who’ve been to space have described vividly what it’s like to live in zero gravity. There are obviously all sort of possibilities for dancing, gymnastics, and zero-G sports. Luckily, you don’t need to sleep much living in zero gravity, so you’ll have plenty of time for relaxing by hanging out in a bar with a window looking down at the turning Earth below.

Of course all good things have come to an end. Unfortunately, And so after a few days you’ll find yourself heading back enough you’ll be much more expert at exercising in zero gravity than you were when you arrived. You’ll be thinking how soon you can save up enough to get back up again---or maybe you should change jobs to get to work in an orbiting hotel.

1.When traveling in space, most people would like to stay in orbit for a few days because _______.

A．It is expensive to travel in space

B．they would find the possible life in other star systems

C．they could enjoy the luxury of space hotels

D．they want to realise the full potential of tourism

2.Which of the following is a unique experience that space hotels will offer?

A．The gravitational pull

B．The special views.

C．The relaxation in a bar

D．The space walk.

3.Which of the following is not discussed in the passage?

A．When was the space traveling made possible?

B．What are the unique experiences that space hotels will offer?

C．Why were there not many published designs for space hotels?

D．How can the travelers enjoy themselves in space hotels?

4.This passage is mainly about ________.

A．traveling in space

B．the ways of living in space hotels

C．zero gravity and space hotels

D．the description of space hotels

 

查看答案和解析>>

科目：高中英語 來源：09-10年福建省高一下學期第一次月考 題型：完形填空

 

第二節(jié)  完形填空（共20小題，每小題1.5分，滿分30分）

    閱讀下面短文，掌握其大意，然后從36-55各題所給的A、B、C、D四個選項，選出最佳選項，并在答題卡上將該項涂黑。

    My baby Rob, the youngest of my three sons, was starting kindergarten. I had already 36 this twice before, but this time it was more difficult. [來源:Z&xx&k.Com]

What if he was scared? What if he missed me? I decided to do the grown-up thing and not tell him how I 37. I assured him that 38 would be just fine. 

The night 39 school started, Rob and I sat down. I hugged him and asked if he had any questions about what he could expect tomorrow ... “I’m 40 excited, Mommy, but I’m a little 41 about what I should do 42 I miss you,” he said sheepishly （膽怯地）.

I had just the 43 for him.

I 44 my hand and showed him a new, shiny penny. “This is a 45 magic penny. If you’re scared or if you 46 me, just put your hand in your pocket and 47 this lucky penny. 48 you hold it and 49 me, I will know and be thinking about you , too.”

It was absolutely 50. I’d be thinking about him every minute.

The next day as he 51 his schoolroom, he looked back at me. My baby looked so sure of himself. I smiled back at him and hoped that he didn’t see the 52 in my eyes.

The hours moved slowly but finally it was time to pick him 53. “I had a great day!” he 54. “There were a few times I was worried, but I held on to my lucky penny and that made me feel better.”

After about a week I found it on his dresser.  I guessed he was secure enough in his new situation that he didn’t 55 it anymore.

I, on the other hand, kept it in my pocket for a few more days.

36. A. looked into           B. gone through                C. turned into           D. brought out  

37. A. escaped              B. left                   C. arrived             D. felt

38. A. everything          B. nothing                 C. someone       D. something

39. A. after                 B. until                 C. before             D. till

40. A. really              B. seldom               C. possibly          D. hardly

41. A. worried              B. disappointed         C. pleased        D. angry 

42. A. unless                      B. whenever                  C. though            D. if

43. A. reply                  B. answer                     C. key                D. result

44. A. closed              B. covered               C. opened             D. hid 

45. A. light                B. round                 C. cheap             D. lucky

46. A. remember          B. see                       C. miss                 D. refuse 

47. A. hold on to             B. take away                C. get back         D. take care of 

48. A. Some times       B. Every time             C. Any time         D. At times

49. A. turn down        B. refer to               C. think of              D. look up to

50. A. false                        B. true                    C. impossible         D. uncertain 

51. A. left                B. passed               C. cleaned             D. entered

52. A. blood                 B. water                 C. tears               D. sweat  

53. A. out                    B. up                 C. in                  D. away

54. A. cheered            B. signed               C. cried            D. whispered

55. A. forget                B. respect              C. help             D. need

 

查看答案和解析>>

同步練習冊答案