关于慢性龈炎时的龈沟错误的是（）。 A.龈沟探诊可达3mm或更多 B.加深的龈沟称为

Read and fill in the blanks. （阅读上下文，补全对话）  

Alice: Where is my dress?

Mike: 1._____ 2. _____ your dress, Alice?

Alice: No, it 3._____. 

Mike: What 4._____ is it?

Alice: Red.

Dad: Is that your 5._____, Alice?

Alice: Yes, 6._____ 7._____. Thank you.

Mike: Mom, 8._____ trousers are they?

Mom: They are your baby brother's.

下列不属于成人化脓性骨髓炎特点的是()

A．多数只有局部症状和体征

B．发病缓慢

C．容易侵犯关节，导致功能障碍

D．无明显全身中毒症状

E．预后良好

硫酸镁导泻时应（）

A.首剂减半量

B.首剂加倍

C.早晨1次顿服

D.口服用药

E.舌下含服

His name is Tony Herry Williams. His _____ name is Williams.  [ ]

A. first            

B. last        

C. family          

D. fist

夜盲症是因为缺少哪种维生素所导致？