1 . The World Health Organization warns that millions of people are dying every year from indoor air pollution. Nearly three billion people are unable to use clean fuels and technologies for cooking, heating as well as lighting.

These findings show that the use of deadly fuels in inefficient stoves, space heaters or lights is to blame for many of these deaths.

WHO officials say indoor pollution leads to early deaths from stroke, heart and lung disease, childhood pneumonia and lung cancer. Women and girls are the main victims. These diseases can often result from the burning of solid fuels. These fuels include wood, coal, animal waste, crop waste and charcoal.

The United Nations found that more than 95 percent of households in sub-Saharan Africa depend on solid fuels for cooking. It says huge populations in India, China and Latin American countries, such as Guatermala and Peru,are also at risk.

Nigel Brace is a professor of Public Health at the University of Liverpool. He says researchers are developing good cook-stoves and other equipment to burn fuels in a more efficient way.There are already multiple technologies available for use in clean fuels.There is really quite an effective and reasonably low-cost alcohol stove made by Dometic (a Sweden-based company) that is now being tested out. LPG (Liquefield Petroleum Gas) cook is obviously widely available and efforts are under way to make those efficient. Another interesting development is electric induction stoves. WHO experts note that some new, safe and low-cost technologies that could help are already available. In India, you can buy an induction stove for about $8.00. And in Africa you can buy a solar lamp for less than $1.00.

But this,the agency says, is just a start. It is urging developing countries to use cleaner fuels and increase access to cleaner and more modern cooking and heating appliances/devices.

1. What does the indoor pollution mainly result from?

A．Poisonous fuels.

B．High technology.

C．Space heaters.

D．Solar energy.

2. How is Paragraph 3 mainly developed?

A．By showing differences.	B．By describing a process.
C．By making a list.	D．By analyzing data.

3. What can we infer from the passage?

A．Indoor pollution results in some deaths.

B．Most of the deaths are in developing countries.

C．The solid fuels are used in more effective ways.

D．There is no indoor pollution in developed countries.

4. Which of the following is TRUE according to the passage?

A．LPG cooks are being tested out.	B．Alcohol stoves are widely used now.
C．Electric induction stoves are expensive.	D．Solar lamps are very cheap in Africa.