烤瓷金属基底桥连接体的位置，较金属桥连接体的位置略偏（）。

A.近中

B.远中

C.舌侧

D.颊侧

E.龈底

He knows little of mathematics,         of chemistry.

A．and still less

B．as well as

C．and still more

D．no less than