Nội Dung Chính
(Page 57)
V. LISTENING
Black carbon and global temperature
1. Work in pairs. Match the words with their meanings.
| 1. soot | a. to make or become liquid by heating |
| 2. melt | b. the upper layer of the earth in which trees and plants grow |
| 3. crop | c. tiny pieces of black dust that are produced when wood, coal, etc. is burnt |
| 4. soil | d. a plant such as rice or fruit, grown by farmers and used as food |
2. Listen to a talk and choose the main idea. 🎧
A. Farmers produce the largest amount of soot.
B. Black carbon contributes to burning crop waste and wildfires.
C. Black carbon emissions come from several sources and affect the earth's temperature.
3. Listen to the talk again. Choose the correct answers A, B, or C. 🎧
1. The world's biggest source of soot is
A. burning forests
B. burning crop waste
C. killing living things in the soil
2. Black carbon only stays in the atmosphere for a few
A. hours B. days or weeks C. months
3. Black carbon speeds up
A. the release of sunlight into the air
B. burning of crop waste
C. ice melting
4. The next part of the talk will probably be about
A. ways to reduce black carbon emissions
B. heat-trapping gases
C. other heat-trapping pollutants
4. Work in groups and answer the questions.
Is black carbon found in your city or neighbourhood? If so, where does it come from?
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