What is the main cause of air pollution in big cities?A. Burning of fossil fuels.B. Industrial production.C. Vehicle emissions.D. Waste disposal.C,即车辆排放。 相关知识点: 试题来源: 解析 C 选项逐项分析:A. 燃烧化石燃料:主要包括发电厂、供暖等固定污染源,是主要的污染源之一,但随着城市能源...
What caused the air pollution in many Indian cities?⏢ 相关知识点: 试题来源: 解析 工业排放、交通尾气、农业焚烧、建筑扬尘、气象条件 印度城市空气污染的主要原因包括:1. **工业排放**,大量工厂使用化石燃料且缺乏有效监管;2. **交通尾气**,老旧车辆密集且燃油质量较低;3. **农业焚烧**,农民焚烧农...
Urban air pollution is nothing new--it has existed, in one form or another, for as long as people have lived together in substantial communities. But it was during the 19th century, with the rise of coal-powered industrial steam and increased domestic coal use, that its impact really began...
Air pollution is caused by humans introducing chemicals and other materials into the air. These pollutants are dangerous to both the environment and our own health. Air pollution has a wide range of effects from respiratory disease to climate change. Understanding the causes and effects of air pol...
The effects of air pollution on pollinating insects.Causes of air pollution in big cities. 相关知识点: 试题来源: 解析 1. C2. D3. D4. B5. C 1.本文是一篇说明文。文章通过介绍Ryalls团队的研究实验阐述了空气污染对传花粉昆虫的重大影响。推理判断题。根据“Their study found that air pollution ...
What is the best way to help control air pollution in our towns and cities? Choose public transportation instead of private cars, or reduce the total amount of cars on the street. These can be useful. But here is a more creative way—write a poem. "I write in praise of air. I was...
[题目]In many big cities in the world. the overuse of cars is thought to be one of the main causes of air pollution. What will cars be like in the future? Some experts think that today's cars are in trouble they use too much petrol . They say the cars o
In many big cities in the world, the overuse of cars is thought to be one of the main causes of air pollution. What will cars be like in the future? Some experts(专家) think that today's cars are in troublethey use too much petrol (汽油). They say the cars of the future will ...
Chemicals In the Air: Air pollution is the contamination of air in our atmosphere by harmful gases and particulate matter that is not naturally found in the air. Air pollution is caused by many different sources, including the burning of fossil fuels, vehicle exhaust and industrial processes. ...
D. Causes of air pollution in big cities. 相关知识点: 试题来源: 解析 7.C 细节 解题。 根据第三 中“They can't smell flowers because of the pollution."可知,空气污染会使传花 粉者闻不到花的味道,因而影响花粉的传播。 8.D 节题。 根 第五 中“To do their study, Ryalls' team built...