Kennedy第一类牙列缺损者
A．为单侧游离缺失
B．为双侧游离缺失
C．为非游离缺失
D．为间隔缺失
E．为前牙缺失
参考答案：B
With more forests being destroyed, huge quantities of good earth ____ each year. [ ]
A. is washing away
B. is being washed away
C. are washing away
D. are being washed away
Java语言中的浮点数默认类型是 【6】 。
