string(261) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BD%BB4%E6%9C%80%E5%90%8E%E5%85%AD%E5%A5%97%E9%A2%98%E6%A8%A1%E6%8B%9F%E8%80%8340%E5%88%86 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
轻4最后六套题模拟考40分
