不属于临床常见的蜡型变形现象的是（）

A.卡环蜡型的卡环臂末端变形张开

B.全口义齿基托蜡型的后堤离开石膏模型

C.蜡型从口腔取出过程中扭曲变形

D.可摘局部义齿蜡基托向颊舌侧张口变形

----       busy schoolwork , the children also have to take arts , music and sports classes in their free time .

---- I wonder what they will become .

A．Rather than

B．Owing to

C．Except for

D．Apart from