string(261) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B1%B1%E4%B8%9C400%E5%88%86%E8%80%83%E4%BB%80%E4%B9%88%E5%A4%A7%E5%AD%A6%E5%AE%B9%E6%98%93 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
山东400分考什么大学容易
