简答题In the 1970s, two _____ occurred and affected the whole world. A、economic crises B、petroleum crises C、fresh water crises D、nuclear crises简答题Our Common Future is a report issued by the World Commission on Environment and Development on the future of mankind. In this report, three points were made clearly _____. A、environment crisis, energy crisis and development crisis are inseparable B、the amount of resources and energies on Earth is far from meeting the demand of human development C、the world as a whole must cooperate to cope with energy crisis D、we must change our development model for our generation and future generation简答题In June 1972, the United Nations held the Conference on the Human Environment in Stockholm and signed the famous_____. A、Rio Declaration B、The Limits to Growth C、Declaration on the Human Environment D、Agenda 21简答题Green economy emphasizes the relationship between_____, and systemized relevant policies and regulations, market principles and systematic mechanisms. A、human welfare improvement B、social justice improvement C、environmental risks reduction D、ecological scarcity reduction简答题In 1992, the UN Conference on Environment and Development issued_____, which indicated the start of international cooperation to combat climate change. A、Our Common Future B、Rio Declaration C、The UN Framework Convention on Climate Change D、The UN Framework Convention简答题The essences of ecological environmental problems are _____. A、crisis of human traditional civilization B、crisis of human traditional culture C、crisis of human traditional values D、crisis of human traditional productivity简答题The global warming curve is inconsistent with the growth of carbon dioxide concentration. _____简答题Theoretically, the positive and negative effects of production activities appear as negative entropy and entropy increase. If the sum of the two is negative entropy, that is the decrease in entropy, then the role of production activities is generally destructive rather than constructive. _____简答题The main causes of smog are:_____. A、emission from high-pollution enterprises B、emission from automobile exhaust C、fire coal for heating in winter D、burning straw简答题The three parts of Our Common Future are:_____. A、Common Concerns B、 Common Crisis C、Common Challenges D、Common Endeavors