string(278) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=21%E5%B9%B4%E4%B8%80%E5%BB%BA%E5%BB%BA%E7%AD%91%E5%AE%9E%E5%8A%A1%E9%A2%98%E7%9B%AE%E5%A4%AA%E5%81%8F%E4%BA%86 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
21年一建建筑实务题目太偏了
