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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(下降) 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( 性别) 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.ageing C.long life 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.exercise regularly to keep your heart healthy
B.find out the reason for ageing
C.enable your heart to beat much faster
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
科目 英语   题型 阅读理解   难度 中等
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相关试题

Making friends is a skill like many other skills. It improves with practice. If you want to meet people and make friends, you must be willing to take some actions. You must first go where there are people. You won't make friends staying home alone. Join a club or a group. Talking with those who like the same things as you do is much easier. Or join someone in some activities. Many people are nervous when talking to new people. After all meeting strangers means facing the unknown. And it's human nature to feel a bit uncomfortable about the unknown. Most of our fears about dealing with new people come from doubts about ourselves. We imagine other people are judging us or finding us too tall or too short, too this or too that. But don't forget that they must be feeling the same way. Try to accept yourself as you are and try to put the other person at ease. You'll both feel more comfortable.
Try to act selfconfidently even if you don't feel that way. When you enter a room full of strangers, such as a new classroom, walk tall and straight, look directly at other people and smile.
If you see someone you'd like to speak to, say something. Don't wait for the other person to start a conversation.
Just meeting someone new does not mean that you will make friends with that person—friendship is based on mutual liking and“give and take”. It takes time and effort to develop.
The best title of the text may be________.

A.Friendship B.How to Make Friends
C.Meeting New People D.Facing the Unknown

You can't make friends if you________.

A.take some actions B.go to where there are people
C.avoid meeting people D.won't start a conversation

Friendship is based on________.

A.selfconfidence
B.meeting more unknown people
C.more talking and smiling to people
D.taking from and giving to people

Which of the following statements is NOT true?

A.Making friends needs practising.
B.Making friends needs to be more active in starting a conversation.
C.When meeting someone, make him feel nice and starting a conversation.
D.Before making friends with someone, judge if he's too this or too that.

A man once had a dream about the Black Forest in Germany. In his dream he was walking in the forest when two men ran out and tried to throw him to the ground. He ran off as fast as he could, but they followed him. He reached a place where he saw two roads in front of him, one to the right and the other to the left. Which road should he take? He heard the two men behind him, getting nearer, and at the same time he heard a voice in his ear. It told him to go to the right, and he did so. He ran on and soon came to a small hotel. He was received there kindly and given a room, and he was saved from the two men. That was the dream.
Twenty years later he was really in the Black Forest and, as happened in the dream long ago, two men ran out and tried to throw him down. He ran off, and came to a place with two roads, like in the dream. He took the road to the right without thinking. He soon reached a small hotel, was taken in, and so was safe. His dream of twenty years before had saved his life.
The Black Forest is __________.

A.a place in Europe B.not a real place
C.dangerous place D.a place visited twice by the man

It was _________ that saved the man’s life 20 years later.

A.a voice B.the dream 20 years before
C.guests of the hotel D.guard of the forest

The story tells us that _________.

A.the man knew something about The Black Forest before he went there
B.the man had a good memory but bad luck
C.people should not believe their dreams because they never come true
D.people should believe dreams because they always can save their lives

When you look at your food, some ingredients(配料) are easy to see. For example, there is milk in your cereal (麦片), cheese on your pizza and peanut butter on your bread. But your meals are also filled with ingredients you can’t see. And you might be surprised to learn just how much those hidden ingredients affect your health.
Salt is a perfect example of an ingredient that you might not notice, even when you eat a lot of it. More than 75% of the salt we eat is hidden in restaurant meals, fast food and processed (加工过的) food, such as French fries, hot dogs and even biscuits.
Salt is important to us and it has many uses. It keeps our muscles (肌肉) working and our nerves (神经) sending messages through the whole body. Salt can be used to clean teeth, to make our skin smooth or added to a relaxing bath. Salt is also used to help make food last longer.
However, eating too much salt can cause heart problems. For a long time, heart trouble has been regarded as an adult problem, but new research shows that salt is starting to affect kids. Then how much salt is safe for kids every day? Let’s look at the following chart:

Ages
Amount of Salt Every Day
1-3 years old
2 grams
4-6 years old
3 grams
7-10 years old
5 grams
11 or more than 11 years old
6 grams

Kids should not eat more than that.
What can we learn from the first two paragraphs?

A.The importance of salt in our everyday life.
B.The result of eating too much salt.
C.How much salt people need every day.
D.Though people eat much salt every day, they may not notice it.

Which of the following is NOT the use of salt?

A.Salt keeps muscles working.
B.Salt helps to make food last longer.
C.Slat helps to reduce heart problems.
D.Salt can be used to clean teeth.

If Mike is 10 years old, how much salt should he eat each day?

A.Five grams. B.Two grams.
C.Three grams. D.Six grams.

Tayka Hotel de Sal
Where:Tahua,Bolivia
How much:About $95 a night
Why it’s cool:You’ve stayed at hotels made of brick or wood,but salt?That’s something few can claim.Tayka Hotel de Sal is made totally of salt—including the beds (though you’ll sleep on regular mattresses(床垫) and blankets).The hotel sits on the Salar de Uyuni,a prehistoric driedup lake which is the world’s biggest salt flat.Builders use the salt from the 4,633squaremile flat to make the bricks,and glue them together with a paste (糊) of wet salt that hardens when it dries.When rain starts to dissolve the hotel,the owners just mix up more salt paste to strengthen the bricks.
Green Magic Nature Resort
Where:Vythiri,India
How much:About $240 a night
Why it’s cool:Taking a pulley(滑轮)operated lift 86 feet to your treetop room is just the start of your adventure.As you look out of your open window—there is no glass!—you watch monkeys and birds in the rain forest canopy(罩篷).Later you might test your fear of heights by crossing the handmade rope bridge to the main part of the hotel,or just sit on your bamboo bed and read.You don’t even have to come down for breakfast—the hotel will send it up on the pulleydrawn “elevator”.
Dog Bark Park Inn B&B
Where:Cottonwood,Idaho
How much:$92 a night
Why it’s cool:This doghouse isn’t just for the family pet.Sweet_Willy is a 30foottall dog with guest rooms in his belly.Climb the wooden stairs beside his hind leg to enter the door in his side.You can relax in the main bedroom,go up a few steps of the loft(阁楼) in Willy’s head,or hang out inside his nose.Although you have a full private bathroom in your quarters,there is also a toilet in the 12foottall fire hydrant(消防栓) outside.
Gamirasu Cave Hotel
Where:Ayvali,Turkey
How much:Between $130 and $475 a night
Why it’s cool:This is caveman cool!Experience what it was like 5,000 years ago,when people lived in these mountain caves formed by volcanic ash.But your stay will be much more modern.Bathrooms and electricity provide what you expect from a modern hotel,and the white volcanic ash,called tufa,keeps the rooms cool,about 65in summer.(Don’t worry—there is heat in winter.)
What do we know about Tayka Hotel de Sal?

A.It is located on a prehistoric lake.
B.It should be protected against the rain.
C.Everything in the hotel is made of salt.
D.You have to cross a rope bridge to the hotel.

What is the similarity of the four hotels?

A.Being expensive.
B.Being comfortable.
C.Being natural.
D.Being unique.

What does the underlined words “Sweet Willy” refer to?
A.The name of the hotel.
B.The name of the hotel owner.
C.The building of Dog Bark Park Inn B&B.
D.The name of a pet dog of the hotel owner.
Which of the hotels makes you have a feeling of living in the far past?
A.Tayka Hotel de Sal.
B.Green Magic Nature Resort.
C.Dog Bark Park Inn B&B.
D.Gamirasu Cave Hotel.

Elizabeth and I are 18 now, and about to graduate. I think about our elementary school friendship, but some memories have blurred(模糊). What happened that day in the fifth grade when Beth suddenly stopped speaking to me? Does she know that I’ve been thinking about her for seven years? If only we could go back, and discover what ended our relationship.
I have to speak with Beth. I see her sometimes, and find out school is “fine”. It’s not the same. It nvever will be. Someone says that she’s Liz now. what happened to Beth?
I can’t call her. Should I write? What if she doesn’t answer me? How will I know what she’s thinking?
Yes, I’ll write her a letter. These things are easier to express in writing. “Dear Be-,” no, “Dear Li-” no, “Dear Elizabeth,” I begin. The words flow freely, as seven-year-old memories are reborn. I ask her all the questions that have been left unanswered in my mind, and pray she will answer. I seal my thoughts in the perfect white envelope, and imagine Beth looking into the mailbox. Will she know why I’m writing? Maybe she once thought of writing the same letter.
As the mailman takes my envelope from me forever, I wonder if I’ve made the right decision. Do I have the right to force myself into Beth’s life again? Am I simply part of the past? I have taken the first stop. Beth has control of the situation now.
One day has passed. Are my words lying on the bottom of the post office floor.
Two days are gone. I’m lost in thought and don’t even hear the phone ring.
“Hello? It’s Elizabeth”
What can we learn about Beth?

A.She had a quarrel with the author in the fifth grade
B.She moved to another school in the fifth grade
C.She is now called Liz instead of Beth
D.She hasn’t seen the author for seven years

Why does the author decide to write a letter instead of calling?

A.She is sure that Beth will not answer
B.She’s afraid that they’ll quarrel on the phone
C.She doesn’t know Beth’s telephone number
D.It is easier to express her feelings in writing

What does the underlined sentence mean in the fifth paragraph?

A.It’s up to Beth to decide what to do next
B.Beth is to be blamed for the ending of their friendship
C.Beth is in the same situation as the author is
D.The author is completely in the hands of Beth now

What might happen at the end of the story?

A.Beth answers her letter two day later
B.The letter doesn’t reach Beth at all
C.They make up their friendship
D.Beth refuses to make peace with her

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