历年四级作文参考复习课程.pdf

历年四级作文参考： Disposable Plastic Bags In our daily life, most people use disposable plastic bags for shopping and other purposes. However, the excessive use of disposable plastic bags has resulted in great damages both to environment and to people’s health. In the first place, it takes about 200 years for a buried plastic bag to decompose and be absorbed by the soil. Secondly, which is less known to the public, the use of disposable plastic bags will indirectly do harm to people’s health. Sometimes people buy hot food packed into disposable plastic bags to save the time and labor in washing their dining utensils. Yet they are not informed of the chemicals in the bags will release in high temperature. Therefore, they are eating the poisonous stuff while enjoying the tasty food. It ’s enlightening and significant that our government has banned the free provision of disposable plastic bags in supermarkets. Trial practice has shown considerable reduction in the consumption of the plastic bags. In a word, fewer plastic bags leads to the sustainable development of our earth. Recreational Activities As the saying goes “all work and no play makes Jack a dull boy ”, recreational activities offer people a good chance to relieve themselves of the pressure nowadays. With the development of society and the improvement of people’s living standard, there are more and more kinds of them ranging from Karaoke, dancing, movie-going to online games and sports games. Undoubtedly recreation is indispensable if we are to remain healthy physically and mentally. They can help us not only make our life more colorful, build our body and mind, but also improve our social and communicative ability. But like a coin with two sides, recreational activities can also be harmful if undertaken improperly, indulging in a movie or a game filled with violence and crimes is