string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E8%80%83%E8%AF%95%E8%AF%95%E5%8D%B7%E4%B8%8A%E5%8F%AF%E4%BB%A5%E9%9A%8F%E4%BE%BF%E5%86%99 => Failed to connect to 101.89.117.144 port 38076: Connection refused"
一建考试试卷上可以随便写
