题目内容（请给出正确答案）

[主观题]

Pollutants from cars cause ______ , which can damage buildings and pollute rivers.

查看答案

如果结果不匹配，请联系老师获取答案

您可能会需要：

重置密码查看订单联系客服

安装优题宝APP，拍照搜题省时又省心！

更多“Pollutants from cars cause ___…”相关的问题

第1题

Britains emissions of greenhouse gases, blamed by many scientists for contributing to glob

al warming, have fallen by 14 percent since 1990, according to the latest government report. British lakes and rivers are also on the road to recovery from acid rain poisoning, following successful curbs to air pollution from cars and heavy industry. The report by the National Atmospheric Emissions Inventory (NAEI) attributed the drop in greenhouse gas emissions to several factors including: the introduction of catalytic converters on cars, a move toward low sulphur and lead-free petrol and a switch to gas from coal and oil in power generation. Environment Minister Michael Meacher said the downward trend was welcome, but warned of complacency. "Even though these figures are encouraging, we must not be complacent There are still significant problems where we need to do more, for example, to further reduce greenhouse gases and harmful pollutants (污染物) such as ammonia and particulate matter," he said in a statement. The government has a target to cut greenhouse gases by 23 percent by 2010 on 1990 levels. This is almost double the target of 12. 5 percent to which the UK is committed under the Kyoto Protocol and there are signs that emissions are rising as generators return to using coal-fired power stations in the face of rising natural gas prices. The Department of Environment Food and Rural Affairs (DEFRA) said substantial curbs on sulphur dioxide emissions across the UK and Europe had cut acid rain by half over the last 12 years. "Damaged freshwater lakes and streams are showing signs of recovery," it said. But DEFRA warned of a new threat: "Nitrogen oxides and ammonia are the main air pollutants that must be tackled to stop future damage. " The bulk of Britains ammonia emissions come from farm animal manure (粪肥), causing over-enrichment of land and waterways, said the report. Certain species rampage unchecked through this ultra-fertile environment, smothering the slower growing plants beneath them and choking streams and rivers. Nitrogen oxides enter the atmosphere from car exhausts and industry, creating health-damaging ozone and contributing to acid rain.

According to the passage, Britain has achieved success in all of the following EXCEPT

A．reducing emissions of greenhouse gases

B．recovering lakes and rivers from pollution

C．preventing acid rain from falling

D．curbing air pollution from cars and heavy industry

点击查看答案

第2题

Out of the seven pollutants mentioned in the first half of the article, hybrid cars produc

e fewer pollutants in at least five cases.

A．Y

B．N

C．NG

点击查看答案

第3题

Pollution occurs whenever unnatural substances are introduced into an environment. Most

ocean pollution caused by humans are concentrated along the 【M1】______ coasts of continents. Lets see what some of the pollutants are. Industrial wastes sometimes get to seawater. Often, 【M2】______ these contain(concentrations)of metals and chemicals that harm organisms. Solid wastes, such as plastic bags and fishing line left lying on the beaches, can entangle in animals. Medical waste such as needles, plastic 【M3】______ tubing, and bags are a threat to both humans and animals. Pesticides, which include herbicides(weed killers) and insecticides(insect killers), used in farming reaching the ocean as runoff. They become 【M4】______ concentrating in the tissues of marine organisms. 【M5】______ Crop fertilizers and human sewage create a different kind of problem. They fertilize the water. This causes some types of algae to produce very rapidly. 【M6】______ When these algae die, theyre decomposed by huge amount of bacteria. The problem is that the bacteria use 【M7】______ up much of the oxygen in the water during respiration. However, other organisms such as fish cant get the 【M8】______ oxygen they need, and they die. Oil spills also pollute the ocean. Youve heard in the news about major oil spills caused to tanker 【M9】______ collisions, and leaks at offshore oil wells. Another source of oil pollution is oil mixed with wastewater thats pumped out of ships. In addition to these resources, oil discarded from cars and industries is 【M10】______ sometimes dumped into streams. It, too, eventually reaches the ocean.

【M1】

点击查看答案

第4题

According to the passage all water pollutants come from household waste.A．YB．NC．NG

According to the passage all water pollutants come from household waste.

A．Y

B．N

C．NG

点击查看答案

第5题

Acid rain is produced when atmospheric moisture combines with pollutants from paper mill （

Acid rain is produced when atmospheric moisture combines with pollutants from paper mill (造纸厂) , factories and automobiles.

A．Y

B．N

C．NG

点击查看答案

第6题

What can be inferred from this？A．Sometimes natural air pollutants can purify air.B．Natural

What can be inferred from this？

A．Sometimes natural air pollutants can purify air.

B．Natural air pollutants are harmful to people.

C．There are some chemical reactions in the air.

D．Air pollutants move from air to water or soil.

点击查看答案

第7题

According to the passage, most water pollutants come from .A. raw sewage

According to the passage, most water pollutants come from .

A. raw sewage

B. toxic chemicals

C. algae

D. household waste

点击查看答案

第8题

Although recent years have seen（）reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing.

A.substantial

B.substance

C.submit

D.subjective

点击查看答案

第9题

The electrostatic precipitator has got rid of ______ from manufacturing processes.A．severe

The electrostatic precipitator has got rid of ______ from manufacturing processes.

A．severe emissions

B．ozone-layer depletion

C．many pollutants

D．toxic substances

点击查看答案

第10题

听力原文：Are electric cars the way of the future？Automobile manufactures are under pressur

听力原文： Are electric cars the way of the future？Automobile manufactures are under pressure to develop cars that do not pollute.One powerful motive is a California law requiring that by the year 2020 ten percent of new car sells in the state be so called zero-emission vehicles.These cars must put no pollutants whatsoever into the at-mosphere.

California is a huge market for the automobile companies,so they are working hard to meet these standards. So far the electric car seems to be the best alternative.So the big advantage of electric cars is that they don't pollute.However they will be in competition with gas-powered cars and that's where the weaknesses come out.The big problem is that the batteries that power electric cars weigh a lot relative to the amount of power they deliver.For instance,in one prototype electric car,the batteries weighed 400 kilograms.And they provide enough energy to go 250 kilometers before recharging,which takes eight hours.Compare that to a moderately fuel-efficient conventional car,it can go 600 to 700 kilometers on a tank of gas and refilling takes just minutes.If there are other drains on an electric car's batteries besides the motor,headlights,air-conditioning or a heater,its already limited range will be significantly reduced.So automobile engineers are trying to make more powerful batteries that would increase the cars'range and make them more attractive to buyers.

Why does the electric car seem to be the best alternative so far？

A．It is comfortable.

B．It is best made.

C．It causes no pollution.

D．It makes less noise.

点击查看答案