慢性根尖周炎主要的诊断指标是
A.牙髓无活力
B.咀嚼不适感
C.反复肿痛史
D.叩诊异样感
E.根尖周X线透射区
参考答案:E
抗动脉粥样硬化因子是()
A.VLDL
B.LpA.
C.LDL
D.HDL
E.CM
What a pity! Liu Xiang didn't win the _____ hurdles (跨栏). [ ]
A. 110-meter
B. 110-meters
C. 110 meter