Qian Xuesen is known as China's "father
问题:
Qian Xuesen is known as China's "father of space technology" and "king and rockets".
He died _____ October 21 at the age of 98. [ ]
A. in
B. on
C. at
D. of
Qian Xuesen is known as China's "father of space technology" and "king and rockets".
He died _____ October 21 at the age of 98. [ ]
A. in
B. on
C. at
D. of