填空题
- A. everything
- B. a great success
- C. a tremendous failure
- D. nothing
- E. many firsts
- F. quite possible
填空题
Mir enhanced the confidence in the scientists that humans living in space for along time was 1.
填空题
In Mir, the U. S. astronauts created 1.
填空题
When we think of Mir in terms of its achievements, its setbacks are 1.
填空题
The writer tend to think that Mir was 1.