Do you know that Yuan Longping is known
题型:选择题
问题:
Do you know that Yuan Longping is known as ______ father of hybrid rice (杂交水稻)?
A./
B.the
C.a
D.an
Do you know that Yuan Longping is known as ______ father of hybrid rice (杂交水稻)?
A./
B.the
C.a
D.an