Astronauts live and work in space stations. Astronauts use sleeping bags to sleep. And they need a patch(眼罩), or it'll be too bright for them to fall asleep. There is no gravity in space. Astronauts float in the space station.
During 7. the 21-hour stay in space, he flew around the Earth 14 times. It is really hard for ordinary people 8. to travel (travel) in space.There is no gravity in space, so people don't feel 9. comtortable (comfort). Yang's story tells10. us (we) that nothing is impossible...
Earth gravity from space or how attractive is our planet?...doi:10.1051/epn/2013103Reiner RummelEDP SciencesEurophysics News
Now the space station___ water and iceboxes. They can eat much everyday food such as fruit, vegetables and icecream. They have ___ own rooms in space. Sleeping is really too ___. There is no gravity(引力), so they have to tie themselves ___ the beds in their own rooms, ___...
This is more important in space than on Earth. There’s not much gravity in space. Astronauts don’t stand up, sit down or walk in space, so their muscles don’t have to work much. They exercise on bikes and other machines for about two hours every day while they’re in space. In...
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...
F [本 "The lack of ... eaten in space. "说 了重 力也是宇航员饮食中需要考虑的因素之一;下文“Aloose knife...dangerous.”说明了刀在太空舱到处弹跳是危险 的,F项(同样的原因,锋利的刀叉在船上从不使用。 )中的 the same reason指的就是 The lack of gravity (pull)。故选F。 ] 39. B ["...
Einstein didn't believe gravity was a force at all; he said it was a distortion in the shape of space-time, otherwise known as "the fourth dimension" (seeHow Special Relativity Worksto learn about space-time). Basic physics states that if there are no external forces at work, an object...
B) It is a charity organization.C) It is a counseling center.D) It is a sports club. Questions 22 to 25 are based on the passage you have just heard. 22.A) How mice imitate human behavior a space.B) How low gravity affects ...
cream. They have ___ own rooms in space. Sleeping is really too ___. There is no gravity(引力), so they have to tie themselves ___ the beds in their own rooms, ___ they will fly away! ___ is important in space. Astronauts don't have to work much. They don't stand up, s...