慢性增生性牙髓炎时探诊深龋洞可发现( )
A.洞底硬,无疼痛感B.洞内探到穿髓孔,感疼痛C.洞内有红色肉芽组织增生D.洞底有大量软化腐质E.洞底穿孔达根分歧
参考答案:C
35.With exports _______ an important role in its economic growth now, this province has been affected by the global economic downturn.
A.played
B.to play
C.playing
D.Play
下列省级行政区中,哪个不是位于边疆[ ]
A.辽
B.云
C.赣
D.甘