A、<span style="font-family: 宋体; line-height: 18.88888931274414px; text-indent: 29px;">是死循环</span>
B、<span style="font-family: 宋体; line-height: 18.88888931274414px; text-indent: 29px;">循环执行两次</span>
C、<span style="font-family: 宋体; line-height: 18.88888931274414px; text-indent: 29px;">循环执行一次</span>
D、<span style="font-family: 宋体; line-height: 18.88888931274414px; text-indent: 29px;">有语法错误</span>
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