2026年3月托福机经套卷(第6套)Listen to an Academic Talk4 道题

Listen to an Academic Talk

共用材料

共用录音 1

What is the main topic of the talk?

AThe variety of organic materials in landfills

BThe environmental benefits of composting

CThe different types of organisms that break down organic matter

DThe production of different fertilizers

查看答案

正确答案：B

What product of decomposition in landfills does the speaker mention?

AA lot of remaining trash

BThe spread of harmful organisms

CHumus

DMethane gas

查看答案

正确答案：D

What does the speaker imply is a challenge in composting?

AUsing the correct combination of different materials

BSeparating food and vegetable scraps from paper waste

CPreventing chemical reactions between nitrogen and carbon

DKeeping conditions warm enough for decomposition

查看答案

正确答案：A

What negative effect of chemical fertilizers does the speaker emphasize?

ATheir use results in agricultural products that are unhealthy to eat.

BTheir use reduces plant growth in the short term.

CThey can cause the soil to lose water and air.

DThey harm organisms that improve soil quality.

查看答案

正确答案：D