请教各位上传失败是什么原因？

Arduino:1.8.5 (Windows 7), 开发板："Arduino/Genuino Uno"

项目使用了 942 字节，占用了 (2%) 程序存储空间。最大为 32256 字节。
全局变量使用了9字节，(0%)的动态内存，余留2039字节局部变量。最大为2048字节。
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
上传出错。查看http://www.arduino.cc/en/Guide/Troubleshooting#upload 获取建议。
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x72
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x72

在文件 -> 首选项开启
“编译过程中显示详细输出”选项
这份报告会包含更多信息。

你看一下你的COM口选对了吗？

你都是怎么操作的呢？

换个USB线试试