[多选题]某大型外语培训机构拟实施包括实现规模经济、针对12岁以下的幼童设计独有的“贝乐学科英语”培训项目等在内的战略方案，以增加其业务的竞争优势。该外语培训机构上述业务层战略包括（ ）。
A.成本领先战略
B.差异化战略
C.集中差异化战略
D.集中成本领先战略

My Views on Food Wasting
With the improvement of living standards, the phenomenon of food wasting has grown far more common than ever, to which people seem to be accustomed. Xi Jinping, general secretary of the Communist Party of China Central Committee, called for frugality, which pushed the tricky problem in the teeth of the storm.
The main reasons of the phenomenon mentioned above lie in bad social morality and rapid economic development. To begin with, the ever rising living standard enables people to demand better quality and style of what they eat, while practicing thrift seems to be out of date. In the next place, the Chinese, influenced by the treat tradition of "Surplus Year after Year", intend to show their hospitality and affluence. What’s more, banquets at public expenses have led to more shocking wasting scenes.
How can we tackle the issue with urgency First and foremost, government should guide people to change inherent concept and to uphold the traditional virtue of diligence and thrift. Besides, relevant supervision and penalties shall be conducted timely and properly.