解析 D 正确答案:D 解析:根据第一段第四、五句“A major source of air pollution is the gas fumes from cars.Another major source of dirty air is the burning of coal and oil for energy.”可知,城市中空气污染的主要来源是汽车尾气以及为取得能源而燃烧煤和石油造成的烟雾。故选D。
Differentproducts, processes and activities of our industrializedworld together form the major source of pollution.The forms of pollution can be mainly dividedinto three kinds - solids, liquid and gas. Thesepollutants have greatly damaged our planet andcontinue to do so. In fact, pollution is ...
[听力原文] 17-20 We experience different forms of the Sun’s energy every day. We can see its light and feel its warmth. The Sun is the major source of evaporation of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These...
百度试题 结果1 题目What is the major source of air pollution in a city?A agricultureB heavy industryC educationD medical system 相关知识点: 试题来源: 解析 B 解析见答案 反馈 收藏
There are different kinds of pollutants each of which comes from different sources. It is necessary to identify the source of pollution in order to make a policy to eliminate them.Different products processes and activities of our industrialized world together form the major source of pollution. T...
Different products, processes and activities of our industrialized world together form the major source of pollution. The forms of pollution can be mainly divided into three kinds—solid, liquid and gas. These pollutions have greatly damaged our planet and continue to do so. In fact, pollution is...
Which of the following is a major source of water pollution? A. Rainfall B. Recycling C. Chemical fertilizers D. Solar E. nergy 相关知识点: 试题来源: 解析 C。解析:本题考查水污染的来源知识。Chemical fertilizers化学肥料,如果进入水体,会造成水污染。Rainfall降雨本身不是水污染来源。Recycling回收...
选项A“Trees”树木是对环境有益的,能够净化空气而不是污染空气;选项B“Solar panels”太阳能板是清洁能源设备,不会造成空气污染;选项C“Factories”工厂,许多工厂在生产过程中会排放废气,是空气污染的主要来源之一;选项D“Wind turbines”风力涡轮机是清洁能源设施,不会造成空气污染。从语法上,这是一个关于选择正确...
[translate] aMotor vehicles are the largest source of air pollution, producing a haze of smog over the world’s cities. In the United States, they produce at least 50% of the country’s air pollution. 正在翻译,请等待...[translate]
题目___are the major source of regional variation of language. () A. Loyalty to and confidence in one’s native speech B. Geographical barriers C. Social barriers. D. Physical discomfort and psychological resistance to change 相关知识点: 试题来源...