document.write('下列哪种颜色可以抗眼疲劳（）&nbsp;&nbsp;<font color="#0000CC" onclick="showMsg(\'正确答案为: B:绿色\',\'center\');" title="正确答案为: B:绿色">提示</font><br><input type="radio" name="vvv" id="v1" value="A" /><label for="v1">A:白色</label><BR><input type="radio" name="vvv" id="v2" value="B" /><label for="v2">B:绿色</label><BR><input type="radio" name="vvv" id="v3" value="C" /><label for="v3">C:红色</label><BR><input type="radio" name="vvv" id="v4" value="D" /><label for="v4">D:蓝色</label>');