输入命令：ssc install grqreg/ssc install grqreg.pkg
结果：
remote connection failed
http://fmwww.bc.edu/repec/bocode/g/ either
  1)  is not a valid URL, or
  2)  could not be contacted, or
  3)  is not a Stata download site (has no stata.toc file).
输入命令：net install grqreg.pkg
结果：
file http://www.stata.com/grqreg.pkg not found
could not load grqreg.pkg from http://www.stata.com/