题目内容
() 4. How many Chinese astronauts (航天员) into space since 2003?
—Twelve,including two women.
A. were sent B. sent
C. have been sent
4. C
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题目内容
() 4. How many Chinese astronauts (航天员) into space since 2003?
—Twelve,including two women.
A. were sent B. sent
C. have been sent