Question

Yang Liwei’s journey into ____ space took him 600,000 kilometres in ____ orbit, around the earth 14 times, in just over 21 hours

1. A.
   a, an
2. B.
   the, an
3. C.
   不填，不填
4. D.
   the, the

Answer 1

C
考查冠词的用法。句意“杨利伟在太空遨游了600000公里，用时21小时，绕地球14圈。”space前不加冠词，in orbit“在轨道上”。故选C。