Tiangong-1, _____first Chinese space lab
问题:
Tiangong-1, _____ first Chinese space laboratory, was sent up into space successfully
on September 29, 2011.[ ]
A. a
B. an
C. the
D.(不填)
Tiangong-1, _____ first Chinese space laboratory, was sent up into space successfully
on September 29, 2011.[ ]
A. a
B. an
C. the
D.(不填)