四六级考试

【分析解答题】Space TourismMake your reservations now. The space tourism industry is officially open for business, and tickets are going for a mere $20 million for a one-week stay in space.Despite reluctance from NationalAir and SpaceAdministration (NASA、, Russia madeAmerican businessmanDennis Tito the world’’s first space tourist. Tito flew into space aboard a Russian Soyuz rocket that arrived at the International Space Station (ISS) onApril 30, 2001. The second space tourist, SouthAfrican businessman Mark Shuttleworth, took off aboard the Russian Soyuz onApril 25,2002, also bound for the ISS.LanceBass of N Sync was supposed to be the third to make the $20 million trip, but he did not join the three-man crew as they blasted off on October 30,2002, due to lack of payment. Probably the most incredible aspect of this proposed space tour was that NAS
A、approved of it.These trips are the beginning of what could be a profitable 21st century industry. There are already several space tourism companies planning to build suborbital vehicles and orbital cities within the next two decades. These companies have invested millions, believing that the space tourism industry is on the verge of taking off.In 1997, NAS
A、published a report concluding that selling trips into space to private citizens could be worth billions of dollars.
A、Japanese report supports these findings, and projects that space tourism could be a $10 billion per year industry within the next two decades. The only obstacles to opening up space to tourists are the space agencies, who are concerned with safety and the development of a reliable, reusable launch vehicle. SpaceAccommodationsRussia’’s Mir space station was supposed to be the first destination for space tourists.But in March 2001, the RussianAerospaceAgency brought Mir down into the Pacific Ocean.As it turned out, bringing down Mir only temporarily delayed the first tourist trip into space.The Mir crash did cancel plans for a new reality-based game show from NBC, which was going to be calledDestination Mir. The Survivor-like TV show was scheduled to air in fall 2001. Participants on the show were to go through training at Russia’’s cosmonaut (宇航员) training center, StarCity.Each week, one of the participants would be eliminated from the show, with the winner receiving a trip to the Mir space station. The Mir crash has ruled out NBC’’s space plans for now. NAS
A、is against beginning space tourism until the International Space Station is completed in 2006.Russia is not alone in its interest in space tourism. There are several projects underway to commercialize space travel. Here are a few of the groups that might take tourists to space:-Space Island Group is going to build a ring-shaped, rotating "commercial space infrastructure (基础结构)" that will resemble theDiscovery spacecraft in the movie "2001:
A、Space Odyssey. "Space Island says it will build its space city out of empty NAS
A、space-shuttle fuel tanks (to start, it should take around 12 or so) , and place it about 400 miles aboveEarth. The space city will rotate once per minute to create a gravitational pull one-third as strong asEarth’’s.-According to their vision statement, SpaceAdventures plans to "fly tens of thousands of people in space over the next 10-15 years and beyond, around the moon, and back, from spaceports both onEarth and in space, to and from private space stations, and aboard dozens of different vehicles..."-Even Hilton Hotels has shown interest in the space tourism industry and the possibility of building or co-funding a space hotel. However, the company did say that it believes such a space hotel is 15 to 20 years away.Initially, space tourism will offer simple accommodations at best. For instance, if the International Space Station is used as a tourist attraction, guests won’’t find the luxurious surroundings of a hotel room onEarth. It has been designed for conducting research, not e
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试题答案：small gravitational pull 答案解析：根据The small gravitational pull created by rotating space city would allow space-tourists and residents to walk around and function normally within the structure．一句作答。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>