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

Mary and Peter were having a picnic with some friends near a river when Mary noticed an object overhead. "Look!" she shouted to her friends. "That's a spaceship up there and it's going to land here."

    Frightened by the strange silver-colored spaceship, most of the young people got in their cars and drove away quickly. Peter was fond of Mary and always stayed close to her. They, more curious than frightened, watched the spaceship land and saw a door open. When nobody came out, they went to the spaceship and entered inside. Peter followed Mary into the spaceship and did not hear the door closed behind him. The temperature fell rapidly and the two young people lost consciousness.

    When they woke up, they were surprised to see that they were back by the river again. The spaceship had gone. Their car was nearby.

   "What happened?" asked Mary.

   Peter scratched (抓k.&s~5*u) his head, saying slowly, "Don't ask me. Perhaps we had a dream. Did you...Did you see a spaceship?"

   "Yes," said Mary. "And we both went into it. Then..." she looked at her wrist. "That's funny. My watch has stopped. Oh, well, come on. It's time to go home."

    Driving about fifty meters, they found their way blocked by a thick wall made of something like glass. They got out of the car and tried to find their way round the wall but discovered that they were inside a circular wall. It was like a mirror and prevented them from seeing through it.

   On the other side of the wall, strange creatures walked past slowly. A few stopped to stare through the wall and read a new notice which, translated into English, said: "New arrivals at the zoo: a pair of Earthlings in their natural surroundings with their mobile house."

When the spaceship arrived, why didn't Peter drive away?

A. He did not like leaving Mary. k.&s~5*u

B. He knew that the spaceship was harmless.

C. He was too frightened to drive.

D. There was a wall blocking the road.

Why did Peter enter the spaceship?

A. He saw the food and was hungry.

B. Mary told him to enter it.

C. He just followed Mary.

D. He wanted to study it.

Peter scratched his head so we know that _____.

A. he had lost consciousness

B. he was puzzled and did not know what to say to Mary

C. he had lost his memory

D. he was still half asleep

What do the words "strange creatures" mean to tell us?

A. They were wild animals in a zoo.

B. They were robbers.

C. They had landed on Earth in a spaceship and lived there.

D. The young couple were on another planet.

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