string(235) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%88%9D%E4%BC%9A%E8%80%83%E8%AF%95%E6%A8%A1%E6%8B%9F%E9%A2%98 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
2021初会考试模拟题
