新近安装了R 3.3.1，同时把原先备份的Library拷贝进去，之后用update.packages(checkBuilt=T,ask=F)命令更新所有的包。在这过程中，出现了以下提示：

Warning: package 'zoo' in library 'C:/Program Files/R/R-3.3.1/library' will not be updated
Warning in install.packages(update[instlib == l, "Package"], l, repos = repos,  :
  'lib = "C:/Program Files/R/R-3.3.1/library"' is not writable
Packages which are only available in source form, and may need compilation of C/C++/Fortran: ‘BRugs’ ‘gpclib’ ‘Rsymphony’
  These will not be installed
Warning message:
In download.file(url, destfile = f, quiet = TRUE) :
  InternetOpenUrl failed: '不能连接到吊销服务器，或者未能获得最终响应。'
请问这是什么意思？应该怎么办呢？谢谢！

而且还会出现一个对话框（见附件截图），我该选择哪一个？