. 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 题目和参考答案——青夏教育精英家教网—

题目内容

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.

60. The underlined word "longevity" in the second paragraph probably refers to ____.

A. health B. long life C. ageing D. effect

61. The text mainly talks about ______.

A. men's heart cells B. women's ageing process

C. the gender difference D. hearts and long life

62. 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 health

D.prevent your cells from being lost

63. 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

60---63 BDDB

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You are near the front line of a battle. Around you shells are exploding; people are shooting from a house behind you. What are you doing there? You aren’t a soldier. You aren’t ___36___ carrying a gun. You’re standing in front of a ___37___ and you’re telling the TV ___38___ what is happening.

It’s all in a day’s work for a war reporter, and it can be very ___39___. In the first two years of the ___40___ in former Yugoslavia(前南斯拉夫), 28 reporters and photographers were killed. Hundreds more were ___41___. What kind of people put themselves in danger to ___42___ pictures to our TV screens and ___43___ to our newspapers? Why do they do it?

“I think it’s every young journalist’s ___44___ to be a foreign reporter,” says Michael Nicholson, “that’s ___45___ you find the excitement. So when the first opportunity comes, you take it ___46___ it is a war.”

But there are moments of ___47___. Jeremy Bowen says, “Yes, when you’re lying on the ground and bullet(子弹) are flying ___48___ your ears, you think: ‘What am I doing here? I’m not going to do this again.’ But that feeling ___49___ after a while and when the next war starts, you’ll be ___50___.”

“None of us believes that we’re going to ___51___,” adds Michael. But he always ___52___ a lucky charm(护身符) with him. It was given to him by his wife for his first war. It’s a card which says “Take care of yourself.” Does he ever think about dying? “Oh, ___53___, and every time it happens you look to the sky and say to God, ‘If you get me out of this, I ___54___ I’ll never do it again.’ You can almost hear God ___55___, because you know he doesn’t believe you.”

36. A. simply B. really C. merely D. even

37. A. crowd B. house C. battlefield D. camera

38. A. producers B. viewers C. directors D. actors

39. A. dangerous B. exciting C. normal D. disappointing

40. A. stay B. fight C. war D. life

41. A. injured B. buried C. defeated D. saved

42. A. bring B. show C. take D. make

43. A. scenes B. passages C. stories D. contents

44. A. belief B. dream C. duty D. faith

45. A. why B. what C. how D. where

46. A. even so B. ever since C. as if D. even if

47. A. fear B. surprise C. shame D. sadness

48. A. into B. around C. past D. through

49. A. returns B. goes C. continues D. occurs

50. A. there B. away C. out D. home

51. A. leave B. escape C. die D. remain

52. A. hangs B. wears C. holds D. carries

53. A. never B. many times C. some time D. seldom

54. A. consider B. accept C. promise D. guess

55. A. whispering B. laughing C. screaming D. crying

---Have you had lunch? ----_____.

A.Yes, How about you. B.It’s very kind of you to invite me, but I’m afraid I hve no time. C.Yes, why do you ask me? D.All the dishes taste well.Thank you very much

The most frightening words in the English language are, “Our computer is down.” You hear it more and more when you are on business. The other day I was at the airport waiting for a ticket to Washington and the girl in the ticket office said, “I’m sorry, I can’t sell you a ticket. Our computer is down.”

“If your computer is down, just write me out a ticket.”

“I can’t write you out a ticket. The computer is the only one allowed to do so.”

I looked down on the computer and every passenger was just standing there drinking coffee and staring at the black screen. Then I asked her, “What do all you people do?”

“We give the computer the information about your trip, and then it tells us whether you can fly with us or not.”

“So when it goes down, you go down with it.”

“That’s good, sir.”

“How long will the computer be down?” I wanted to know.

“I have no idea. Sometimes it’s down for 10 minutes, sometimes for two hours. There’s no way we can find out without asking the computer, and since it’s down it won’t answer us.”

After the girl told me they had no backup(备用) computer, I said. “Let’s forget the computer. What about your planes? They’re still flying, aren’t they?”

“I couldn’t tell without asking the computer.”

“Maybe I could just go to the gate and ask the pilot if he’s flying to Washington, ” I suggested.

“I wouldn’t know what gate to send you to. Even if the pilot was going to Washington, he couldn’t take you if you didn’t have a ticket.”

“Is there any other airline flying to Washington within the next few hours?”

“I wouldn’t know, ” she said, pointing at the dark screen. “Only ‘IT’ knows. ‘It’ can’t tell me.”

By this time there were quite a few people standing in lines. The word soon spread to other travelers that the computer was down. Some people went white, some people started to cry and still others kicked their luggage.

The best title for the article is _______.

A. When the Computer Is Down B. The Most Frightening Words

C. The Computer of the Airport D. Asking the Computer

What could the girl in the ticket office do for the passengers without asking the computer?

A. She could sell a ticket. B. She could write out a ticket.

C. She could answer the passengers’ questions. D. She could do nothing.

Why do you think they had not a backup computer?

A. Because it was easy down B. Because it was very expensive.

C. Because it was not advanced enough. D. Because it was not as big as the main computer.

The last paragraph suggests that _______.

A. a modern computer won’t be down.

B. computers can take the place of humans

C. sometimes a computer may bring suffering to people

D. there will be great changes in computers

On August 5 at 10:31 p.m. PST, a rover（探测器）named Curiosity touched down safely on the surface of Mars, and I was lucky enough to have a front-row seat.
My name is Clara, and when I was in Grade 6, I won the essay contest NASA held to name its next Mars rover. The essay I wrote was not even 250 words long, but somehow it was enough to change my life.
I still remember that cold December day, sitting in a science class. I’d finished a worksheet early and decided to get a Time for Kids magazine off Mrs. Estevez’s bookshelf. It was the 2008 Invention Issue, but that wasn’t the only thing that caught my eye. In the magazine, there was an article about a girl who named the Mars Exploration Rovers, Spirit and Opportunity. The article also talked about the essay contest NASA was holding to name its next Mars rover. Before I even knew anything else about it, a single word flooded my 11-year-old mind: Curiosity.
I couldn’t wait for the bell to ring so I could get started on my essay. That afternoon, I raced home from the bus stop, sat down at the computer and typed until my fingers ached. It turned out that I was just in time. A few days later, and the contest would have closed.
Five months later, shortly after I had turned 12, I was watching a National Geographic special on mammoths when the phone rang. My mom answered, and immediately, a wide smile spread across her face. When she told me that I had won, I was happier than I could ever remember being, I screamed and ran up and down the stairs and all around the house. I completely forgot about the mammoths and did not even remember to turn off the TV until it was really late.
Curiosity is such an important part of who I am. I have always been fascinated by the stars, the planets, the sky and the universe. I remember as a little girl, my grandfather and I would sit together in the backyard for hours. He’d tell me stories and point out the stars.
My grandfather lived in China, thousands of miles away from my home in Kansas. I loved the stars because they kept us together even when we were apart. They were always there, yet there was so much I didn’t know about them. That’s what I love so much about space. No matter how much we learn, it will always possess some mystery.
In the past, space exploration may have been a competition to see who got somewhere first or the fastest. But now, it is one of the few things that bring people together. Science is a language that needs no translation. It doesn’t matter where you’re from or what you look like – you just have to have a thirst for knowledge and a passion for learning in order to succeed.
People often ask me why we go to faraway places like Mars. Why do we explore? My answer to that is simple: because we can; because we’re curious; because we as human beings do not just stay holed up in one place. We are constantly wondering and trying to find out what’s over the hill and beyond the horizon.
The curiosity rover is more than just a robot. It is more than just a titanium body and aluminum wheels. Curiosity represents the hard work, passion, love and commitment of thousands of people from all over the world who were brought together by science. Science is so awesome. It is breathtaking and mind-blowing; and sometimes, it’s just a little bit crazy. The discoveries we make about our world are incredibly humbling. They move us forward and have the potential to benefit all of mankind.
This December it will be four years of my life that have been tied to Curiosity in some way. I’ve met so many amazing people through this experience, from scientists to engineers to administrators to volunteers. Their devotion and enthusiasm inspire me greatly. My journey with Curiosity and the MSL mission team has shaped the person that I am today, as well as the person I would one day like to become.
I am deeply grateful to everyone who made it possible for me to have this amazing adventure.
And to you, I hope your curiosity takes you far.
【小题1】 The method the writer uses to begin the passage is _____.