On women’s Day,           of the girls was excited because they each           a present.

A．every one; was given

B．everyone; was given

C．every one; were given

D．everyone; were given

为保证拨叉直槽与柱塞平行，防止拉杆在壳体支承孔内或拨叉在拉杆上转动而发生（）卡住现象，故在拉杆上制有一长平面。

A.拉杆

B.柱塞弹簧

C.柱塞调节臂

D.凸轮轴