在固定矫治过程中，为解除拥挤常采用在弓丝上弯制（）。

A.水平曲

B.欧米加曲

C.泪滴型曲

D.垂直张力曲

E.小圈曲

The new librarian still doesn't know () the out of date newspapers and magazines.

A．what to deal with

B．how to deal with

C．how to do with

D．what to do away with