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Have you ever dreamed of visiting a planet in the Milky Way (银河系)? While the trip sounds exciting, it would take years and years to reach your destination. So in the future, bedtime for astronauts may be more than a few hours of regular shut eye. They would have to sleep for years.
European researchers are now conducting hibernation experiments. The study may help them understand whether humans could ever sleep through the years it would take for a space flight to distant planets. "If there was an effective technology, it could make deep-space travel a reality," said Mark Ayre of the European Space Agency last month.
What seems like a science fiction is not completely unlikely. Researchers have been able to use chemicals to put living cells into a sleep-like state where they don’t age. They have now moved on to the small, non-hibernating mammals (哺乳动物) like rats.
A major challenge is the fact that cells can be very simple systems, whereas body organs are far more complex (复杂的). "It’s like moving from a simple Apple computer to a supercomputer," said Marco Biggiogera, a hibernation researcher at Italy’s University of Pavia．Just like bears and frogs, the hibernation of human beings would cause a person’s metabolism (新陈代谢) to lower so they would need less energy.
Medical research, however, is just half of a space flight hibernation system. There is a challenge of designing a suitable protective shelter (栖身所). Such a shelter would provide the proper environment for hibernation, such as the proper temperature. It would also have to monitor (监控) life functions and serve the physiological needs of the hibernator.
According to Ayre, the six-person Human Outer Planets Exploration Mission (使命) to Jupiter’s moon (木星的卫星) Callisto could be an opportunity to use human hibernation. The mission aims to send six persons on a five-year flight to Callisto, where they will spend 30 days, in 2045.
According to the article, the hibernation research ______.
A．is just an idea B．is always a science fiction
C．has already finished successfully D． has made some progress
In a hibernating state, a person needs ______.
A．less sleep B．more food C．less energy D． more movement
The first try of the hibernation technology _____ the six-person Human Outer Planets
Exploration Mission to Jupiter’s moon Callisto.
A．will be B．has been planned for
C．is certain to be D． may be
What is the best title of the article?
A．Hibernation Study For Space Travel B．Welcome To Our Space Travel
C．To Hibernate, To Live Longer D． Welcome To The Milky Way
查看习题详情和答案>>---Alice, what’s wrong with you? You look so worn out.
---Nothing serious. I my new house all day and I’m afraid I won’t finish until tomorrow afternoon.
A．have whitewashed B．am whitewashing
C．have been whitewashing D．shall be whitewashing
查看习题详情和答案>>Can you imagine being savagely attacked by a dog? What if the attack was so severe that your nose, lips and chin were completely destroyed? How would you feel about yourself? Would you be able to look at yourself in the mirror? And how do you think other people would treat you?
Isabelle Dinoire is someone who can answer all of these questions honestly and openly.
Last November Isabelle was attacked and mauled by her own dog. The attack was so severe that her lower face was damaged; it seemed, almost beyond repair. She was rushed to hospital and became the first person ever to have a face transplant.
With such severe injuries doctors offered Isabelle little hope that they would be able to repair the damage to her face using conventional surgery.
Shortly after being admitted, she came to the attention of Dr Bernard Devauchelle who, unlike other surgeons, believed there was an alternative: "We found ourselves saying, yes, it's clear this woman needs a transplant," he said.
Two days after the operation she saw her face in the mirror for the first time. She said "I was scared to look at myself, but when I did it was already marvelous and I couldn't believe it. I thought it would be blue and swollen but it was already beautiful."
Now, less than a year after her 15 hour operation, she’s trying to rebuild her life and there is no doubt how she feels about her new face: "I have been saved. Lots of people write saying that I need to go on, that it's wonderful. It's a miracle somehow."
Although there were ethical questions raised about their decision to carry out the procedure, the doctors who operated on Isabelle are quick to defend their decision.
One of them said "Was it possible for her to live without a face? It's easy to say we shouldn't have done the operation, but her life has changed, she goes shopping, goes on holiday, she lives again."
What would be the best title of the passage?
A. The first face transplant B. A successful face operation
C. The most severe damaged face D. The breakthrough of surgery
The writer uses the five questions at the beginning of the passage to ___________________.
A. tell the story about Isabelle Dinoire B. show a severe face damage event
C. draw the readers’ attention to the topic D. invite the readers to answer them
It can be concluded from Isabelle Dinoire’s remarks that___________________.
A. she was too shocked to see herself in the mirror
B. she was satisfied with the result of the operation
C. she thought her damaged face couldn’t be repaired
D.she looked more beautiful than before
According to the passage, which of the following is NOT true?
A. It seemed that it was impossible to recover Isabelle’s face using face transplant
B. After operation Isabelle thought she looked beautiful and rebuilt her life again
C. Some doctors had no better idea to repair the damage to Isabelle’s face
D. It was Dr Bernard Devauchelle who came up with the idea of face transplant
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