As is recorded in history, silkworms wer
问题:
As is recorded in history, silkworms were first raised in ____we now know as Hebei Province.
A.where
B.that
C.which
D.what
As is recorded in history, silkworms were first raised in ____we now know as Hebei Province.
A.where
B.that
C.which
D.what