What happened to the Discovery space shuttle? How fast does a space shuttle go? How much did the Challenger space shuttle cost? What did the astronauts do when they landed on the moon? What was the mission of the Challenger space shuttle?
根据第二段第一句“Thereisalmostnogravityinspace, soastronautsdonothavetosleeponthebedorthefloor.(太空中几乎没有重力,所以宇航员不必睡在床上或地板上。)”可知,宇航员在太空做很多事情很困难的原因是太空中几乎没有重力,故选D。57.【答案】B【解析】题干的意思是:宇航员为什么在太空中使用勺子?A.把果汁倒...
46题答案:A 考查细节理解题,根据文中的第一段They walk in space and use robots'arms and hands to do their work可知他们走在太空中,用机器人的手臂和手做他们的工作 是正确的,故答案A. 47题答案:B 考查细节理解题,根据文中的第二段Inside the space station,astronauts are comfortable可知 在太空站,...
These days especially, American astronauts spend a lot of time on jets en route to Russia. They must do so because, following the 2011 retirement of the space shuttle program, the only way for Americans to travel into space is aboard Russian Soyuz spacecraft. Eventually, independent companies ...
The seven astronauts aboard NASA?s space shuttleDiscovery are headed for the International Space Station on a busy constructionflight. But for nearly half of the shuttle?s crew, the frenetic pace only addsto what is likely an exhilarating, though until now alien, experience: life inzero gravity...
Space Station, astronauts exist in “microgravity.” They are still close enough to Earth to have alittlegravity, but they’re essentially always in a state of “falling.” (Interestingly, she said, though their urine is basically “floating” inside their bladders, astronauts have reported ...
Astronauts go up into space and look at the earth. They also take photos of the other planets and the stars. Sometimes they live in space for a few days or weeks. They do experiments (实验) and learn about what happens to the human body in space. The space is really mysterious. It...
How did astronaut food come into being?How do astronauts preserve food for long periods of time in space?NASA(the National Aeronautics and Space Administration)(美国国家航空航天局)has been researching food for space travel since the 1960's to find the best way of keeping astronauts from going ...
How do astronauts go to the bathroom? We take toilet functions for granted here on earth, but astronauts don't have that luxury. Learn everything you didn't know you wanted to know about how to take care of business in zero gravity.
cramped quarters of the space shuttle or the International Space Station for weeks or even months at a time can get very stinky if astronauts aren’t careful about their personal hygiene. Dirty living can spread germs — which actually multiply faster in space — and can make the astronauts ...