A、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px; TEXT-DECORATION: none">使用while和do-while循环时,循环变量初始话的操作应在循环体语句之前完成</span>
B、<span style="FONT-SIZE: 14px; TEXT-DECORATION: underline">while循环是先判断表达式,后执行循环语句</span>
C、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px">do-while</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px">和for循环均是先执行循环语句,后判断表达式</span>
D、<span style="FONT-SIZE: 14px; TEXT-DECORATION: none">for,while和do-while循环中的循环体均可以由空语句构成</span>