Recently more and more attention has been focused to the problem of preserving the 【S1】______ environment. The fact that a Government Ministry being called the Department of the Environment has 【S2】______ been created shows how unimportant the issue is 【S3】______ considered to be. Over the past thirty years or so the quality of . many people's lives have deteriorated in some respects 【S4】______ because of technological progress. Those, people living neat airports are constantly attacked by the noise of increasingly larger and more powerful jet aircraft taken off and landing. Tile motor car has been 【S5】______ responsible for many changes in the environment. On the one hand it has brought mobility to millions of people, but on the other hand it has taken rise to the 【S6】______ construction of more noisy reads and has polluted the atmosphere with exhaust fumes. While towns and cities have become larger and uglier and more dense populated. The rural areas have 【S7】______ lost most of their population owing to the need for less workers in agriculture. The countryside has also 【S8】______ been affected by the largescale use of insecticides. For one thing the killing of insects has resulted from a loss 【S9】______ of balance in the ecology. Many people are afraid that fruit and vegetables sprayed with chemicals may have some poisonous effect on the people who eat if. 【S10】 ______ 【S1】