He doesn't tell me when he_______ . I'll telephone you as soon as he______.

A．will come;comes

B．will come; will come

C．comes; will come

D．comes; comes

患者男性，23岁，外伤致右上切牙牙冠中1/3斜折，露髓，应采取的最佳治疗方案是

A．保髓治疗后，牙本质螺纹钉+树脂修复

B．根管治疗后，树脂核+烤瓷全冠修复

C．根管治疗后，非金属全冠修复

D．根管治疗后，3/4冠修复

E．根管治疗后，嵌体修复