对半卡环适用于()
A．牙冠外形差的基牙
B．游离缺失的末端基牙
C．远中孤立的磨牙上
D．孤立的双尖牙、磨牙
E．松动的基牙上
参考答案：D
句型转换（每空一词）。
1. I have to help my parents at home on Saturday.（改为否定句）
I my parents at home on Saturday.
2. I have to study for my English test. (改为一般疑问句)
have to study for your English test?
3. you, help , me , can, clean, room, the(连词成句)
?
4. Thank you for your help. (改为同义句)
your help.
5. Can you come to my party? (作否定回答)
, 。
提出了组织结构的五项设计原理的组织理论属于( )
A．巴纳德的组织理论 B．利克特的组织理论C．德鲁克的组织理论 D．霍曼斯的组织理论
