string(248) "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%E6%A8%A1%E6%8B%9F%E9%A2%98%E6%AF%94%E7%9C%9F%E9%A2%98%E9%9A%BE => Failed to connect to 101.91.112.32 port 38221: Connection refused"
一建模拟题比真题难
