string(267) "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%E7%9C%8B%E8%A7%86%E9%A2%91%E8%BF%98%E6%98%AF%E7%9C%8B%E4%B9%A6 => Failed to connect to 101.89.117.144 port 38076: Connection refused"
一建考试看视频还是看书
