The way we cook is important. In many countries, the two choices are     1     (nature) gas or electric-powered stoves.

The World Health Organization warns that millions of people     2     (suffer) from indoor air pollution at present time, which results from the use of dangerous     3     (fuel) and cook-stoves in the home.

WHO officials say nearly three billion people are     4     (able) to use clean fuels and technologies for cooking, heating and lighting. As a result, more than seven million people die from exposure to indoor or outdoor air pollution each year. Most of the deaths are in     5     (develop) countries, such as lndia, China and Latin American countries.

WHO officials say opening a window or door     6     (let) out the harmful air will not correct the situation.     7     will only pollute the outdoors.

Nigel Bruce,     8     is a professor of Public Health at the University of Liverpool, says researchers are developing good cook-stoves and other equipment to burn fuels     9     a more efficient way.

But, this is just a start. It is urging developing countries to use     10    (clean) fuels and increase access to cleaner and more modern cooking and heating appliances (用具).

Every year, people around the world buy about 526 billion bottles, and that number is     1     the increase. More than 8 million pieces of plastic pollution find their way into our oceans every day. Much of other plastic     2     (throw) in landfills or rivers also has bad effects on wildlife. Many people are now trying     3     (cut) down on plastic use, while also turning these single-use plastics into something     4     (benefit)—like auto parts.

The Ford Motor Company has used recycled plastic since the 1990s. Today, it     5     (transform) recycled plastic into vehicle parts in an effort to reduce its carbon footprint, specifically under-body shields(车底护板) on all cars.

“The under-body shield is a large part.     6     is likely for such a big part to weigh three times     7     much if we use solid plastic, ”says Thomas Sweder, design engineer of the Company. “We’re looking for the most durable and     8     (green) materials to make our parts.”

Finding new and     9     (innovate) ways to recycle single-use plastics is essential for our planet. With one of the largest     10     (company) committed to working with recycled plastics, there’s hope that others will follow suit.