________ ,the compass was first invented in China．
________ ,the compass was first invented in China．
A.It is known to all
B.It is known that
C.We all know
D.As is known to all
A.It is known to all
B.It is known that
C.We all know
D.As is known to all
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1年前3个回答
你能帮帮他们吗