问题
选择题
| — We'll do what we can ____ English well this term. — It's high time for you to work hard. |
A. study B. to study C. be studied D. be studying |
答案
答案：B
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| — We'll do what we can ____ English well this term. — It's high time for you to work hard. |
A. study B. to study C. be studied D. be studying |
答案：B
颊侧牙龈卵圆形肿胀，触诊可查及波动感，牙体组织完整，牙周袋深8mm，探诊溢脓。X线示牙槽骨吸收达根长1/2，根尖区无骨吸收暗影，则最可能的诊断是（）。