In the new study, six astronauts from NASA were analyzed before and after spending four to seven months in microgravity on the International Space Station. Each astronaut had magnetic resonance imaging (MRI) scans of their spines before their mission, immediately after their return to Earth and ag...
Before astronauts can go into space, they have to have the right suit. That’s why NASA(美国国家航天和航空局)scientists are developing a new kind of space suit——lighter and more flexible than before. These new space suits will have lots of mobility(灵活性) for the astronauts, but will...
Before astronauts can go into space, they have to have the right suit.That’s why NASA(美国国家航天和航空局)scientists are developing a new kind of space suit——lighter and more flexible than before.These new space suits will have lots of mobility(灵活性)for the astronauts, but will not...
句意:在宇航员飞上太空之前,他们已经训练了数千小时,以确保不会发生失误。 考查动词时态。根据“Before the astronauts flew up into space”可知,设空处的动作发生在过去的某个时间点以前,且已经完成,因此设空处是过去完成时,其结构为“had done”。故选A。反馈...
根据文章第一段,Before astronauts fly into space, they need special training(训练). First they go to Houston, Texas. That is the home of the Johnson Space Center. There they have many tests to wait for them. 再结合全文内容来看,文章主要讲了如何通过测试成为一名宇航员。故选C。 反馈 收藏 ...
1. 问题1: 根据文章 Eating 部分 “Before, astronauts could eat only small pieces of dried food. But now they can eat more food like fruit, vegetables and ice cream.” 可知,现在宇航员可以吃水果、蔬菜和冰淇淋。 2. 问题2: 根据文章 Having fun 部分 “It's also much fun!” 以及最后一段 ...
Before flying into space, astronauts(宇航员)must learn to deal with the hard conditions theywill meet with.2. Some people believe theuniverse(宇宙)was created by a big explosion.3. Do you know the name of thesatellite卫星)?4. The room is two-thirds larger than theydesired(期望).5. A ...
根据"Secondly,space also has high levels of radiation"可知,这些辐射能让人们生病,句意:能量可以通过我们的身体,使我们生病。故选A。(5)D 连词辨析。after在……之后;since自从;before在……之前;while然而。根据"some parts of space are really cold"及"other parts are very hot"可知,这是将两部分进行...
阅读理解 Before astronauts can go into space they have to have the right suit.That’s why NASA(美国国家航天和航空局)scientists are developing a new kind of space suit——lighter and
Three astronauts were examined before and after their space journey. Reactions of skin structure to a mission were imaged using advanced imaging technology. Moceri said, "According to them, this imaging technology is similar to a real tissue biopsy, providingdetailedinformation that helps the researche...