They are talking _______ they were old friends.

A．as if

B．as although

C．even if

D．even though

罗拉握持距应主要依据（）来确定，并根据喂入纱条定量及结构综合考虑。

A.纱条中纤维的最长纤维长度

B.纱条中纤维的最短纤维长度

C.纱条中纤维的品质长度

D.纱条中纤维的主体长度