[音频]Low technology is also important in developing countries. Low-tech inventions can help people improve their quality of life. Two examples are 1. ______devices and stoves that use a small amount of fuel. This is called “appropriate technology.” It usually 2. ________fewer resources than high technology. It also is less 3. ________ and easier to operate. And it does not harm the environment.Burundi’s government wants people to use peat instead of 4. ________fuels. Peat is easy to get and its use can save trees from being cut down. Burundi’s army is the main user of peat stoves. But the country plans to sell peat stoves to 5. ________, too.In Cambodia, about one hundred thousand homes have ceramic water purifiers. These devices 6. _______microorganisms and other substances, making water safe to drink. The American 7. ________group International Development Enterprises has supported the use of the low-tech purifiers.Cambodians like Lach Emmaly are very satisfied. She says she finds the device useful because she does not have to 8. ______for firewood to make a fire to heat water. She says the water 9. _______ saves her time and money, and keeps her 10. ________.