某龈沟位点探诊深度为5mm，结合上皮位于釉牙骨质界，其附着丧失为（）
A.2mm
B.5mm
C.7mm
D.3mm
E.没有附着丧失
参考答案：E
With so many people ______ in the mine(矿), none of the rescue workers would stop to have a rest.
A．being buried
B．to bury
C．buried
D．to be buried
我国对人类危害较大的毒蛇有哪些?
