参考例文：
Recently，the incident of Sanlu milk powder has become the focus of people‘s attention. According to the investigation of related departments，the powder was found to contain a chemical called C3N6H6 which can cause great damage to infants‘ health. So far，four children have died and approximately 54，000 have developed illness after drinking the milk.
From this incident，we can see that there are still more things to be done. Firstly，the government needs everything possible to ensure the quality of products，particularly the safety of food as this concerns everyone‘s life. Secondly，as for the producers，it is very important for them to be morally honest. They should never try to pursue profit or economic growth at the expense of health and life of people. Thirdly，we consumers must attach importance to the things we eat and develop an awareness of how to protect our legal rights if cheated. only in this way will we be able to build a more secure and harmonious society.
