氧化锌丁香油粘固粉的用途哪项除外（）.
A.窝洞的暂封剂
B.安抚充血牙髓
C.中深龋洞垫底
D.深龋内层垫底
E.根管充填材料
参考答案：C
—Have you heard of _______ death of Nelson Mandela?
—Yes. It is indeed _______ loss to the world.
A．the; a
B．a; the
C．the; /
D．a; /
