乳牙拔除的禁忌证
A．血液病
B．内分泌疾病
C．严重心功能不全
D．根尖周有急性炎症
E．以上均是
参考答案：E
The dentist didn't _____ until it was nine o'clock. [ ]
A. show to
B. show off
C. show around
D. show up
凡重复使用的包装，所装货物必须与原装货物无抵触。
