问题
选择题
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
答案
答案：B
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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
答案：B