说出几种常用的数据模型。
参考答案：层次模型、网状模型、关系模型。
分化型甲状腺癌转移灶的诊断以什么放射性核素显像最合适（）
A.99mTc-MDP
B.113mIn胶体
C.201T1C1
D.Na131I
E.99mTcO4
She is an honest girl who freely ________ that what she said was wrong.[ ]
A．admits
B．permits
C．promises
D．agrees
