An astronomer is making a case for launching pop singer Justin Bieber into suborbital（亚轨道的）space aboard a private rocket ship. The idea is not to rid the world of the Canadian teenager — he would come back down to Earth eventually, after all — but rather to help jump-start the emerging suborbital spaceflight industry.
It would generate a lot of public interest, which would help commercial spaceflight pick up some much-needed momentum, said Seth Shostak, senior astronomer at the Search for Extraterrestrial Intelligence (SETI) Institute in Mountain View, California. “If there’s more interest, there are more customers. If there are more customers, there's more technical development. It's a positive feedback loop, and obviously that's good.”
Such missions would return to Earth without completing a full lap around the planet. Instead, the flights would hit the edge of space about 62 miles (100 kilometers) above Earth, experience a few minutes of weightlessness, then re-enter the atmosphere and land back at a spaceport.
None of these firms are ready to fly customers yet, but some are getting close. For instance, Virgin Galactic hopes to begin powered test flights of its SpaceShipTwo vehicle later this year, with commercial operations perhaps beginning in 2013 or 2014. It is SpaceShipTwo that reportedly grabbed the attention of Beyonce and Jay-Z.
Virgin Galactic has collected deposits from nearly 500 customers willing to pay $200,000 for a ride aboard SpaceShipTwo, and both Virgin and XCOR have inked deals to fly scientists and their experiments on research flights. So a suborbital market already exists — but Shostak is thinking about ways to make it grow.
A celebrity launch isn't Shostak’s only idea. Suborbital firms should also promote their activities aggressively via social media, Shostak said, and they should make sure their spaceships are bristling（充满）with cameras both inside and out, to give the public dramatic views of every mission.
Some observers view commercial suborbital spaceflight as a potentially transformative industry, saying it could serve as a stepping stone to the exploration and exploitation of space on an unprecedented scale. While the industry’s success is far from assured, Shostak offered some reason for optimism: The American public remains keen on space.
1.Why may Justin Bieber be sent into suborbital space?
A．To show his bravery and make him a role model for teenagers.
B．To arouse the American public’s interest.
C．To help reform the spaceflight industry.
D．To film an advertisement about space.
2.What can we learn about suborbital spaceflight?
A．A trip will return to Earth before finishing a lap.
B．The whole trip will leave passengers weightless.
C．Each trip can take 500 passengers.
D．The trip will be too expensive even for celebrities.
3.What can we infer from the text?
A．SpaceShipTwo will be the first to fly.
B．Famous people will be the main passengers in the future.
C．The space trip is still in preparation.
D．Every space trip will be made into a film.
4.The last paragraph suggests that _________.
A．space is too mysterious to explore
B．the suborbital market is promising
C．the spaceflight industry is more successful than people think
D．developing the industry is risky
5.What is the main purpose of the text?
A．To predict a change in the space market.
B．To discuss a recent launch.
C．To introduce the status of the spaceflight industry.
D．To remove public doubt about the spaceflight industry.
1.B
2.A
3.C
4.B
5.C
【解析】
试题分析：本文主要介绍了亚轨道航天工业的suborbital spaceflight industry的现状和前景。
1.B 细节题。根据文章第一段The idea is not to rid the world of the Canadian teenager — he would come back down to Earth eventually, after all — but rather to help jump-start the emerging suborbital spaceflight industry.说明这样做是为了引起人们对亚轨道航天工业的兴趣。故B正确。
2.A 细节题。根据文章第三段Such missions would return to Earth without completing a full lap around the planet. Instead, the flights would hit the edge of space about 62 miles (100 kilometers) above Earth, experience a few minutes of weightlessness, then re-enter the atmosphere and land back at a spaceport.可知在这样的飞行中，人们并没有完全绕地球飞行一圈，然后就返回了地面。故A正确。
3.C 推断题。根据文章倒数第三段None of these firms are ready to fly customers yet, but some are getting close.可知这样的飞行并没有真正实现，只是在慢慢接近。故C项正确。
4.B 推理题。根据文章最后2行While the industry’s success is far from assured, Shostak offered some reason for optimism: The American public remains keen on space.
课虽然现在这种行业还没有取得成功，但是前景很乐观，因为美国人对于太空旅游很感兴趣。这个行业还是有很大的潜力的，故B正确。
5.C 主旨大意题。根据文章第一段内容中所举Justin Bieber的例子，就是为了向我们介绍
方兴未艾的 suborbital spaceflight industry.故C正确。
考点：考查科普类短文阅读
点评：本文主要介绍了亚轨道航天工业的suborbital spaceflight industry的现状和前景。
考查科普类短文阅读，此类文章的最大的障碍是词汇以及考生对阅读内容的不熟悉，需要考生在阅读的时候有足够的耐心。要养成在上下文串联中猜测词义的能力，根据上下文中出现的同义词，近义词，反义词，以及词义的解释来理解生词。同时要抓住文章的中心，不要受其他信息的影响。要根据题目及选项以及文章的上下文串联合理的判断推理。
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Researchers from the University of Maryland said the findings suggest that prospective retirees should consider moving into so-called "bridge employment" as a transition to full retirement.
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C. The bridge workers are also less likely to get depression.
D. Staying active is beneficial to the retirees’ physical health.
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A. The study was begun in 1992 and lasts for two 6-year periods
B. If a bridge worker is older than 61 years old, it does not mean that he will get a better health than others who enjoy full retirement.
C. Only by moving into “bridge employment” can the retirees enjoy better health both physically and psychologically.
D. Any activity can benefit the retirees’ mental health.
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