我国()法规定:应用抗生素五天的乳汁及变质乳不得供食用
A、食品卫生
B、环境保护
C、野生动物
D、森林
参考答案:A
As we all know, every minute _____ full use of _____ our lessons will do good to our students. [ ]
A. which makes; studying
B. when made; to study
C. that is made; study
D. that is made; studying
地下水分水岭是一条()。