Even at an early stage the school felt that she ______ a good chance of passing her exams.

A．stood

B．gained

C．possessed

D．took

用国际牙科联合会系统（FDI）记录牙位，正确的是（）.

A.左下第三磨牙为#17

B.右上第三磨牙为#1

C.右上第一磨牙为16

D.左上第二磨牙为17

E.右下第一前磨牙为34