Astronauts now ____________: Pilots, the astronauts who actually fly the space shuttle, account for one-third of the astronaut corps. Mission specialists run experiments in orbit, work the shuttle's robot arm and go on spacewalks. They're doctors, engineers and scientists and can command stays on the space station. They are the remaining two-thirds of the corps.
举一反三
- Astronauts now ____________: Pilots, the astronauts who actually fly the space shuttle, account for one-third of the astronaut
- Astronauts are connected to the space shuttle so that they cannot float off into space.
- Astronauts were ordered to abandon the International Space Station because _______.
- Astronauts were ordered to abandon the International Space Station because _______. A: they faced a threat from space junk B: an emergency was taking place back at Mission Control C: a lot of space junk had surrounded the Space Station D: they were being given an escape drill
- Sequence. Number the topics from 1 to 5 in the order they are discussed in the video. A: how spacesuits protect astronauts B: how spacewalkers train before going to space C: the first two people who performed spacewalks D: why spacewalking is difficult work E: tasks that spacewalkers perform