The space station is made of parts that were assembled in space by astronauts and ________ Earth at an average altitude of approximately 250 miles.
A: programs
B: spins
C: travels
D: orbits
A: programs
B: spins
C: travels
D: orbits
举一反三
- 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
- 8. “It was the first time that US astronauts were sent into space from US soil after a nine-year gap.” No US astronauts have ever been sent into space before.
- 学起: Space travel is dangerous and the astronauts in space have to ______ many discomforts (不适) in their rockets.
- Which of the following statement about China’s development in aerospace is NOT true? () A: China is the third<br/>country – out of 60 nations that engage in space programs –<br/>to independently send humans into space. B: The first manned<br/>docking in space with the Tiangong-2 space station has been realized C: China made a big<br/>breakthrough in space exploration at the beginning of the 21st<br/>century. D: Tiangong project<br/>is about sending human to the moon.