问题
选择题
As is recorded in history, silkworms (蚕) were first raised by a woman in _________ is today Hebei Province.
A．where
B．the place
C．which
D．what
答案
答案：D
考查宾语从句。介词in之后是宾语从句，且从句_________ is today Hebei Province缺少主语，所以选D。