Question

Polluted airborne particles(大气悬浮颗粒) kill 7 million people a year, reports the World Health Organization.

That news may not come as a surprise to anyone who has seen images of chimneys in Beijing, Delhi or Mexico. But those factories－or even the jammed roadways of modern cities－are not the biggest killer. Each year, some 4.3 million people die earlier than they should because of polluted air inside their homes, says the WHO.

What's causing the air inside people's homes to be so poisonous that it kills around 11,000 people a day? Stoves. “Having an open fire in your kitchen is like burning 400 cigarettes an hour.” says Kirk Smith, a professor at the University of California at Berkeley, whose research suggests that household air pollution from cooking killed between 3.5 million and 4 million people in 2013.

Not all stoves cause this kind of harm. The ones Smith's talking about are those that the 3 billion people in the developing world use for heat and cooking, which burn solid fuels such as wood, coal, or crop waste instead of gas. The smoke from those fires produces harmful fine particles and carbon monoxide into homes. Poor ventilation then prevents that smoke from escaping, raising fine particle levels 100 times higher than the limits that the WHO considers acceptable.

Breathing this air day in day out eventually causes a lot of diseases: more than a third of the 4.3 million die of a stroke, while a quarter die of heart disease. And around one-third of annual lung disease deaths worldwide are due to waste from coal stoves.

Exposure tends to be extremely harmful for the people who spend the most time around the fire－usually women and young children. In fact, the WHO reports that household air pollution almost doubles the risk for childhood lung disease.

1.According to Kirk Smith's research,________.

A. factories are the biggest killer worldwide nowadays

B. burning 400 cigarettes an hour is extremely dangerous

C. household air pollution from cooking is surprisingly harmful

D. some 4.3 million people die earlier each year than they should

2.What should be the deadly killer in a household kitchen?

A. Solid fuels.  B. Coal stoves.

C. Poor gas.     D. Cooking smoke.

3. The underlined word “ventilation” in Paragraph 4 probably means ________.

A. airing   B. cooking   C. burning   D. cooling

4.The author intends to tell people ________.

A. how to avoid polluted air in their homes

B. to stop cooking in the household kitchen

C. to guard against household pollution from cooking

D. how to prevent childhood lung diseases in household

Answer

1.C

2.D

3.A

4.C

【解析】

试题分析: 文章讲述了空气污染对人们身体危害极大，这些污染主要有：大气悬浮颗粒、汽车尾气及家庭内的空气污染。

1.C考察细节理解题。根据文章“Having an open fire in your kitchen is like burning 400 cigarettes an hour.” says Kirk Smith, a professor at the University of California at Berkeley, whose research suggests that household air pollution from cooking killed between 3.5 million and 4 million people in 2013.

可知家庭内做饭造成的空气污染对人体的伤害是惊人的，所以答案是C。

2.D考察细节理解题。根据文章The ones Smith's talking about are those that the 3 billion people in the developing world use for heat and cooking, which burn solid fuels such as wood, coal, or crop waste instead of gas可知做饭的油烟是致命的杀手，所以答案是D。

3.A考察词意猜测题。根据文章Poor ventilation then prevents that smoke from escaping, raising fine particle levels 100 times higher than the limits that the WHO considers acceptable可知通风不畅会阻止油烟的排除，所以答案是A。

4.

考点：环保类阅读