Have you ever dreamed of visiting a planet in the Milky Wap版

试题详情及答案解析

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 eyes. 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 spaceflight to distant planets. "If there was an effective technology, it could make deepspace 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 sleeplike state where they don’t age. They have now moved on to the small, nonhibernating mammals like rats.
A major challenge is the fact that cells can be very simple systems, whereas body organs are far more complex. "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 spaceflight hibernation system. There is a challenge of designing a suitable protective shelter. Such a shelter would provide the proper environment for hibernation, such as the proper temperature. It would also have to monitor life functions and serve the physiological needs of the hibernator.
According to Ayre, the sixperson 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 fiveyear flight to Callisto, where they will spend 30 days, in 2045.
【小题1】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

【小题2】In a hibernating state, a person needs ________.

A．less sleep	B．more food
C．less energy	D．more movement

【小题3】The first try of the hibernation technology the sixperson 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

【小题4】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

答案：【小题1】D
【小题2】C
【小题3】D
【小题4】A

试题分析：你梦想过去银河系中的某个星球上旅行吗？这听起来虽然激动人心，但这样的旅行需要花费很多年的时间才能到达要去的那个星球。
【小题1】推理判断题。根据第三段“Researchers have been able to use chemicals to put living cells into a sleeplike state...They have now moved on to the small, nonhibernating mammals like rats”可知，研究人员已经能够使用化学物质让活的细胞处于一种类似睡眠的状态，说明实验研究已经取得了一些进展，故选D。
【小题2】细节理解题。根据第四段“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.”可知，冬眠会降低新陈代谢，这样的话，人体所需的能量就会减少，故选C。
【小题3】细节理解题。根据最后一段“the sixperson 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”可知，探索木星卫星可能会是首次尝试冬眠技术的机会，could表示的可能性较小，故选D。
【小题4】选择最佳标题。根据第一段“They would have to sleep for years...European researchers are now conducting hibernation experiments.”和下文可知，文章主要介绍了用于太空之旅的冬眠实验，故选A。
考点：科学类短文阅读

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