省级局制定的规范性文件要在正式印发的（）报国家局备案。
A.20日内
B.10日内
C.同时
D.5日内
参考答案：C
放牧家畜的营养管理有何意义？
( ) In medieval times, an agree-upon “common tongue” came into use in the eastern Mediterranean ports, which was called Lingua Franca.The term lingua franca cannot be generalized to other languages similarly used.Thus, not any language can be a lingua franca.
