17. ______, his idea was actually worth practicing.

A．As it might sound strange

B．Strange as it might sound

C．As strange it might sound

D．Strange as might it sound

直接制版与直间接制版所述正确的是（）

A.精密度前者优于后者

B.价钱前者高于后者

C.耐印力前者优于后者

D.直接制版无法控制膜厚