游客
题文

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 aging 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 aging 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.aging D.effect

The text mainly talks about ______.

A.men’s heart cells B.women’s aging 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 aging
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 aging 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
登录免费查看答案和解析
相关试题

David is an excellent student and he comes from New York. His family was there until he finished eighth grade. David had no choice but to sleep on park benches. Being alone on the streets was scary. One thing kept David going: his determination to do well in school.
Even though many things were difficult in David’s life, one thing was going very well. David was accepted to a special high school called MC2STEM.It is a public school in Cleveland for kids who are extremely good at science. The school turned out a peaceful place for David. He especially enjoyed having the chance to learn by doing lots of projects.
High school wasn’t easy. But David says that the school helped him set high standards for himself. Even when he didn’t have a place to stay at night, David kept his focus on his schoolwork.
While he was homeless, David would sometimes sleep in the park during the day because it was safer. “ If you sleep in the daytime in the park, people won’t bother you,” he says. “you’re just taking a nap. It’s acceptable.” Then David would study through the night. He showered at a friend’s house when his friend’s parents were at work.
All his hard work paid off. In May 2011, David graduated second in his high school class. He was accepted to 22 colleges. He also won a scholarship form the Bill and Melinda Gates Foundation. It will pay for all his college expenses.
Last fall, David began attending Harvard University, one of the top colleges in the US.”I found the perfect school for me.” He wrote in his blog.
In the future, David might look for a job at a company like Google. Even better, he would like to start his own company. David says, “ I want to work for myself.”
According to the passage, David ________.

A.liked to sleep on park benches.
B.studied very hard.
C.felt high school was easy.
D.hated doing a lot of projects.

We can know from the passage that David would _________.

A.work only in big companies.
B.start a company with partners.
C.win a scholarship again.
D.have a bright future.

Which of the following word can best describe David?

A.cautious B.Lazy C.Determined D.Creative

What’s the best title for the passage?

A.A top University B.A Poor Student
C.Homeless to Harvard D.Winning a Scholarship

People these days always complain how they suffer stress from their daily life. With drugs widely available in the market today, it is still advisable that we consume the best kind of medicine for our body, that is natural drugs.
One of the natural resources for a relaxation drug is the Valerian Root Extract. Scientifically known as Valeriana Officinalis, this plant is a flowering type with heads of pink and white flowers mostly blooming in the summer months. Native in Europe and in small parts of Asia, the plant became popular worldwide because of its sweet scent and unique health benefits.
Past research suggests that the valerian root has healing characteristics that focus on the neurotransmitter of the brain, which makes the brain cells function well. Other researches about this herb suggest that it can keep a person free of anxiety. Although there are various types of valerian root products in the market today, modern medical studies have concluded that further research has to be taken into consideration before acknowledging the so-called benefits of Valerian Root Extracts.
One sample of the so-called benefits is the treatment for anxiety disorder called “social anxiety disorder” or SAD. The benefit has insufficient evidence to support its claim as an alternative relief for anxiety. However, many patients said that they felt improvements on their nervous conditions, stress and overall mental ability.
Valerian Root Extract can be acquired as a tea, tablet, or liquid extract. It is recommended that you consult your physician about this herbal plant if it can really benefit your health.
What does the author intend to do in the passage?

A.To tell readers how to reduce stress.
B.To introduce a natural anxiety treatment.
C.To analyze the benefits of plants.
D.To advertise for the new product.

What do we know about Valeriana Officinalis?

A.It is also called Valerian Root Extract.
B.It is blooming all the year around.
C.It is only grown in European countries.
D.It is well received for its health benefits.

The underlined word “insufficient” in the passage means ______.

A.too much B.pretty plentiful
C.not enough D.well tested

The next time you get caught jumping on your bed you can tell your parents with a straight face that you are not playing, simply getting ready got a promising career in “Mattress Jumping”. Believe it or not, there are some people who actually get paid to do that! According to Reuben Reynoso, a professional mattress tester at San Francisco’s McRoskey Mattress Factory that still makes every mattress by hand, it is real work and needs some training. For a start, it’s not all about jumping to new heights or doing tricks like professional athletes, but rather about feeling each area of the mattress carefully to detect the filling. In order to do it right, every bit of the mattress has to be tested slowly and deliberately.
Over the years, Reynoso has figured out the perfect routine. He begins by placing a protective mat over the mattress so that it doesn’t get dirty or absorb the smell from his feet. Then begins the fun---he steps to the middle of an edge and then takes five steps back and five steps forward. In this way, he slowly but surely, covers the entire surface. The key according to him is to find the perfect number of jumps---Too many and he will end up destroying the mattress completely. Too few? And it will not fit into the giant machine for that final sewing! Who knew a job that sounds so simple could have so many skills!
While Reuben will not reveal how he got into this profession, he will admit that it is more fun than being a carpenter, roofer, construction worker and railroad engineer---all jobs he has tried previous to finding his true profession!
We learn from the text that the McRoskey Mattress Factory ______.

A.is the world’s oldest mattress factory
B.make mattresses for sports
C.produces mattresses by hand
D.hires athletes as mattress testers

The protective mat is used to ______.

A.prevent the tester getting hurt
B.keep the mattress as clean as possible
C.protect the mattress from being destroyed
D.make the mattress fit into the sewing machine

According to Reynoso, the most important thing in his work is ______.

A.the timing of his jumps
B.the height of his jumps
C.the number of his jumps
D.the frequency of his jumps

We can learn from the text that Reynoso ______.

A.has been injured several times in his work
B.liked mattress jumping in his childhood
C.didn’t choose mattress testing as his first job
D.dreamt about becoming a jumping athlete

Four days after Dad’s 67th birthday, he had a heart attack. Luckily, he survived. But something inside him had died. His enthusiasm for life was gone. He refused to follow doctor’s orders, and his sour attitude made everyone upset when they visit him. Dad was left alone.
So I asked Dad to come to live with me on my small farm, hoping the fresh air would help him adjust. Within a week after he moved in, I regretted the invitation. He criticized everything I did. I became frustrated. Something had to be done.
One day I read an article which said when given dogs, depressed patients would be better off. So I drove to the animal shelter that afternoon. As soon as I got there, a pointer’s eyes caught my attention. They watched me calmly.
A staff member said: “He got here two weeks ago and we’ve heard nothing. His time is up tomorrow.”
I turned to the man in horror. “You mean you’re going to kill him?”
“Ma’am,” he said gently. “We don’t have room for every unclaimed dog.”
The police’s calm brown eyes awaited my decision. “I’ll take him,” I said.
I drove home with the dog on the front seat beside me. I was helping it out of the car when Dad walked onto the front porch. “Look what I got you!” I said excitedly.
Dad wrinkled his face. “I don’t want it,” he muttered, turning back towards the house. Then, suddenly, the dog pulled free from my grasp. He sat down in front of my Dad.
Dad’s anger melted, and soon he was hugging the dog.
This was the beginning of a warm friendship. Dad named the dog Cheyenne. Together they spent long hours walking down dusty lanes and relaxing on the banks of streams.
Dad’s bitterness faded, and he and Cheyenne went on to make many friends. Then, late one night two years later, I felt Cheyenne’s cold nose burrowing (搜寻) through my bed covers. He had never before come into my bedroom at night. I ran into my father’s room and found that he had passed away.
Two days later, my shock and grief deepened when I discovered Cheyenne lying dead beside Dad’s bed. As I buried him near their favorite stream, I silently thanked the dog for restoring Dad’s peace of mind.
After the author’s father survived the heart attack, he ______.

A.ignored everyone who visited him
B.became unpleasant toward other people
C.was left alone to get full rest
D.no longer wanted to live

Why did the author take the pointer home?

A.It was a type that is known for its friendliness.
B.Its eyes made her think it was the best dog available.
C.It was good at getting people’s attention and entertaining them.
D.It caught her attention right away and she didn’t want it to be killed.

From the last two paragraphs we can conclude that _______.

A.the author’s father and Cheyenne formed a real connection
B.friendship and care is much more efficient than the medicine
C.more attention should be given to old people
D.dogs are so loyal that they usually die for their friends

Which section of a newspaper is the source of the passage?

A.Friends B.Entertainment
C.Education D.Health

My name’s Geoffrey Chaucer. It was 16th April 1386, and I was in London at an inn in Southwark. Tomorrow I would go to Canterbury, to the shrine (圣地) of Saint Thomas Becket, together with twenty-nine other people. Before I say more, I want to tell you about some of the people with me.
First there was a knight, a good man who fought well and knew many different countries. He was a true friend to everyone, and always helped people when they needed it. His clothes were old, dark, and dirty from many years of fighting.
Then there was a businessman with an expensive hat on his head. The man, who looked wealthier than he truly was, always said, “I’m doing very well.” A very quick thinker, he talked about ships and the sea a lot, and showed much interest in changing money from different countries.
After the businessman came a franklin (乡绅) with a white beard. He asked people from near and far to visit him at home as he liked eating and drinking and having a good time with others. He was an important man, he knew right from wrong, and people listened to him.
There was a woman from Bath. Her face was open, and nice-looking, but she couldn’t hear very well. In her red dress, she was a big woman with a big smile and big teeth, laughing a lot and talking easily. She knew all about love.
So there we were, all thirty of us, at the inn. The landlord, a tall fat man, brought us the best dinner in London. He would also join our journey tomorrow. After we finished eating, the landlord smiled, suggesting “We’re going to Canterbury tomorrow, and that’s four days from here. One by one, let’s all tell a story on the road to make the time go quicker. And to the teller of the best story we can give a free dinner here at my inn when we get back. What do you say?” We all said “yes” happily to him. Then the question for us was: Who goes first?
Which of the following can be described as kind-hearted?

A.The knight. B.The businessman.
C.The franklin. D.The woman.

Which is TRUE of the people described in the text?

A.The knight always wore very expensive clothes.
B.The franklin usually spent time on his own.
C.The woman was deaf and loved the red color.
D.The businessman was not as rich as he seemed.

The underlined sentence most probably means “______”.

A.Who will be the first to be served at the inn
B.Who will be the first to tell a story on the road
C.Who will go at the front of the traveling group
D.Who will be the leader of the traveling group

According to the text, Chaucer would probably arrive in Canterbury on ______.

A.April 19th B.April 20th
C.April 24th D.April 28th

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号