Why do men die earlier than women? The latest research makes it known that the reason could be that men’s hearts go into rapid decline when they reach middle age.
The largest study of the effects of ageing on the heart has found that women’s longevity may be linked to the fact that their hearts do not lose their pumping power with age.
“We have found that the power of the male heart falls by 20-25 percent between 18 and 70 years of age,” said the head of the study, David Goldspink of Liverpool John Moores University in the UK.
“Within the heart there are millions of cells that enable it to beat. Between the age of 20 and 70, one-third of those cells die and are not replaced in men,” said Goldspink. “This is part of the ageing process.”
What surprises scientists is that the female heart sees very little loss of these cells. A healthy 70-year-old woman’s heart could perform almost as well as a 20-year-old one’s.
“This gender difference might just explain why women live longer than men”, said Goldspink.
They studied more than 250 healthy men and women between the ages of 18 and 80, focusing on healthy persons to remove the confusing influence of disease.
“The team has yet to find why ageing takes a greater loss on the male heart,” said Goldspink.
The good news is that men can improve the health of their heart with regular exercise. Goldspink stressed that women also need regular exercise to prevent their leg muscles becoming smaller and weaker as they age.The underlined word “longevity” in the second paragraph probably refers to ________.
| A．health | B．long life | C．ageing | D．effect |
The text mainly talks about ________.
| A．men’s heart cells | B．women’s ageing process |
| C．the gender difference | D．hearts and long life |
According to the text, the UK scientists have known that ________.
| A．women have more cells than men when they are born |
| B．women can replace the cells that enable the heart to beat |
| C．the female heart loses few of the cells with age |
| D．women never lose their pumping power with age |
If you want to live longer, you should ________.
| A．enable your heart to beat much faster | B．find out the reason for ageing |
| C．exercise regularly to keep your heart healthy | D．prevent your cells from being lost |
We can know from the passage that ________.
| A．the reason why ageing takes a greater loss on the male heart has been found out |
| B．scientists are on the way to finding out why the male heart loses more of the cells |
| C．the team has done something to prevent the male from suffering the greater loss |
| D．women over 70 could lose more heart cells than those at the age of 20 |
(2013·高考新课标全国卷Ⅱ，C)Given that many people’s moods (情绪)are regulated by the chemical action of chocolate，it was probably only a matter of time before somebody made the chocolate shop similar to a drugstore of Chinese medicine.Looking like a setting from the film Charlie&the Chocolate Factory，Singapore’s Chocolate Research Facility (CRF) has over 100 varieties of chocolates.Its founder is Chris Lee who grew up at his parents’ corner store with one hand almost always in the jar of sweets.
If the CRF seems to be a smart idea，that’s because Lee is not merely a seasoned salesperson but also head of a marketing department that has business relations with big names such as Levi’s and Sony.That idea surely results in the imagination at work when it comes to making different flavored (味道) chocolates.
The CRF’s produce is “green ”，made within the country and divided into 10 lines，with the Alcohol Series being the most popular.The Exotic Series－with Sichuan pepper，red bean (豆)，cheese and other flavors－also does well and is fun to taste.And for chocolate_snobs，who think that they have a better knowledge of chocolate than others，the Connoisseur Series uses cocoa beans from Togo，Cuba，Venezuela，and Ghana，among others.What is good about chocolate?
| A．It serves as a suitable gift. |
| B．It works as an effective medicine. |
| C．It helps improve the state of mind. |
| D．It strengthens business relations. |
Why is Chris Lee able to develop his idea of the CRF?
| A．He knows the importance of research. |
| B．He learns from shops of similar types. |
| C．He has the support of many big names |
| D．He has a lot of marketing experience. |
Which line of the CRF produce sells best?
| A．The Connoisseur Series. |
| B．The Exotic Series. |
| C．The Alcohol Series. |
| D．The Sichuan Series. |
The words “chocolate snobs” in Paragraph 3 probably refer to people who________.
| A．are particular about chocolate |
| B．know little about cocoa beans |
| C．look down upon others |
| D．like to try new flavors |
Using too much water or throwingrubbish into our rivers are clear ways that humans can put our water supply in danger，but we also affect our water supply in less obvious ways.You may wonder how paving(铺砌) a road can lead to less useable fresh water.A major part of the water we use every day is groundwater.Groundwater does not come from lakes or rivers.It comes from underground.The more roads and parking lots we pave，the less water can flow into the ground to become groundwater.
Human activity is not responsible for all water shortages(短缺)．Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall，but in any case，good management can help to make sure there is enough water to meet our basic needs.
Thinking about the way we use water every day can make a big difference，too.In the United States，a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live，but there’s a lot we can do to lower the number.
You can take steps to save water in your home.To start with，use the same glass for your drinking water all day.Wash it only once a day.Run your dishwasher (洗碗机)only when it is full.Help your parents fix any leaks in your home.You can even help to keep our water supply clean by recycling batteries instead of throwing them away.Which of the following is most likely to lead to less groundwater?
| A．Using river water. |
| B．Throwing batteries away. |
| C．Paving parking lots. |
| D．Throwing rubbish into lakes. |
What can be inferred from the text?
| A．All water shortages are due to human behavior. |
| B．It takes a lot of effort to meet our water needs. |
| C．There is much we can do to reduce family size. |
| D．The average family in America makes proper use of water. |
The last paragraph is intended to________.
| A．show us how to fix leaks at home |
| B．tell us how to run a dishwasher |
| C．prove what drinking glass is best for us |
| D．suggest what we do to save water at home |
The text is mainly about________.
| A．Why paving roads reduces our water |
| B．how much we depend on water to live |
| C．why droughts occur more in dry climates |
| D．how human activity affects our water supply |
It’s such a happylooking library，painted yellow，decorated with palmtree stickers and sheltered from the Florida sun by its own roof.About the size of a microwave oven，it’s pedestrianfriendly，too，waiting for book lovers next to a sidewalk in Palm Beach County Estates，along the northern boundary of Palm Beach Gardens.
It’s a library built with love.
A year ago，shortly after Janey Henriksen saw a Brian Williams report about the Little Free Library organization，a Wisconsinbased nonprofit that aims to promote literacy and build a sense of community in a neighborhood by making books freely available，she announced to her family of four，“That’s what we’re going to do for our spring break！”
Son Austin，now a 10thgrader，didn’t see the point of building a library that resembles a mailbox.But Janey insisted，and husband Peter unwillingly got to work.The 51yearold owner of a ship supply company modified a small wooden house that he’d built years earlier for daughter Abbie’s toy horses，and made a door of glass.
After adding the library’s final touches (装点)，the family hung a signboard on the front，instructing users to“take a book，return a book，”and making the Henriksen library，now one of several hundred like it nationwide and among more than 2,500 in the world，the only Little Free Library in Palm Beach County.
They stocked it with 20 or so books they’d already read，a mix of science fiction，reference titles，novels and kids’ favorites.“I told them，keep in mind that you might not see it again，”said Janey，a stayathome mom.
Since then，the collection keeps replenishing (补充) itself，thanks to ongoing donations from borrowers.The library now gets an average of five visits a day.
The project’s best payoff，says Peter，are the thankyou notes left behind.“We had no idea in the beginning that it would be so popular.”In what way is the library “pedestrianfriendly”？
| A．It owns a yellow roof. |
| B．It stands near a sidewalk. |
| C．It protects book lovers from the sun. |
| D．It uses palmtree stickers as decorations. |
Janey got the idea to build a library from________.
| A．a visit to Brian Williams |
| B．a spring break with her family |
| C．a book sent by one of her neighbors |
| D．a report on a Wisconsinbased organization |
The library was built________.
| A．by a ship supply company |
| B．on the basis of toy horses |
| C．like a mailbox |
| D．with glass |
What can we infer about the signboard?
| A．It was made by a user of the library. |
| B．It marked a final touch to the library. |
| C．It aimed at making the library last long. |
| D．It indicated the library was a family property. |
The passage tells us that the users________.
| A．donate books to the library |
| B．get paid to collect books for the library |
| C．receive thankyou notes for using the library |
| D．visit the library over 5 times on average daily |
One day，when I was working as a psychologist in England，an adolescent boy showed up in my office.It was David.He kept walking up and down restlessly，his face pale，and his hands shaking slightly.His head teacher had referred him to me.“This boy has lost his family，”he wrote.“He is understandably very sad and refuses to talk to others，and I’m very worried about him.Can you help？”
I looked at David and showed him to a chair.How could I help him? There are problems psychology doesn’t have the answer to，and which no words can describe.Sometimes the best thing one can do is to listen openly and sympathetically.
The first two times we met，David didn’t say a word.He sat there，only looking up to look at the children’s drawings on the wall behind me.I suggested we play a game of chess.He nodded.After that he played chess with me every Wednesday afternoon—in complete silence and without looking at me.It’s not easy to cheat in chess，but I admit I made sure David won once or twice.
Usually，he arrived earlier than agreed，took the chess board and pieces from the shelf and began setting them up before I even got a chance to sit down.It seemed as if he enjoyed my company.But why did he never look at me?
“Perhaps he simply needs someone to share his pain with，”I thought.“Perhaps he senses that I respect his suffering.”Some months later，when we were playing chess，he looked up at me suddenly.
“It’s your turn，”he said.
After that day，David started talking.He got friends in school and joined a bicycle club.He wrote to me a few times，about his biking with some friends，and about his plan to get into university.Now he had really started to live his own life.
Maybe I gave David something.But I also learned that one—without any words—can reach out to another person.All it takes is a hug，a shoulder to cry on，a friendly touch，and an ear that listens.When he first met the author，David________.
| A．felt a little excited |
| B．walked energetically |
| C．looked a little nervous |
| D．showed up with his teacher |
As a psychologist，the author________.
| A．was ready to listen to David |
| B．was skeptical about psychology |
| C．was able to describe David’s problem |
| D．was sure of handling David’s problem |
David enjoyed being with the author because he________.
| A．wanted to ask the author for advice |
| B．needed to share sorrow with the author |
| C．liked the children’s drawings in the office |
| D．beat the author many times in the chess game |
What can be inferred about David?
| A．He recovered after months of treatment. |
| B．He liked biking before he lost his family. |
| C．He went into university soon after starting to talk. |
| D．He got friends in school before he met the author. |
What made David change?
| A．His teacher’s help. |
| B．The author’s friendship. |
| C．His exchange of letters with the author. |
| D．The author’s silent communication with him. |
“Indeed，”George Washington wrote in his diary in 1785，“some kind of fly，or bug，had begun to eat the leaves before I left home.”But the father of America was not the father of bug.When Washington wrote that，Englishmen had been referring to insects as bugs for more than a century，and Americans had already created lightningbug(萤火虫)．But the English were soon to stop using the bugs in their language，leaving it to the Americans to call a bug a bug in the nineteenth and twentieth centuries.
The American bug could also be a person，referring to someone who was crazy about a particular activity.Although fan became the usual term，sports fans used to be called racing bugs，baseball bugs，and the like.
Or the bug could be a small machine or object，for example，a bugshaped car.The bug could also be a burglar alarm，from which comes the expression to bug，that is，“to install (安装) an alarm”．Now it means a small piece of equipment that people use for listening secretly to others’ conversations.Since the 1840s，to bug has long meant“to cheat”，and since the 1940s it has been annoying.
We also know the bug as a flaw in a computer program or other design.That meaning dates back to the time of Thomas Edison.In 1878 he explained bugs as“little problems and difficulties”that required months of study and labor to overcome in developing a successful product.In 1889 it was recorded that Edison“had been up the two previous nights discovering ‘a bug’ in his invented record player.”We learn from Paragraph 1 that ________.
| A．Americans had difficulty in learning to use the word bug |
| B．George Washington was the first person to call an insect a bug |
| C．the word bug was still popularly used in England in the nineteenth century |
| D．both Englishmen and Americans used the word bug in the eighteenth century |
What does the word“flaw”in the last paragraph probably mean?
| A．Explanation. | B．Finding. |
| C．Origin. | D．Fault. |
The passage is mainly concerned with________.
| A．the misunderstanding of the word bug |
| B．the development of the word bug |
| C．the public views of the word bug |
| D．the special characteristics of the word bug |
粤公网安备 44130202000953号