2026年4月托福机经套卷(第4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 talk mainly about?

AThe structure of some molecules

BThe causes and consequences of a natural phenomenon

CA survival strategy of animals in winter

DA common result of climate change

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正确答案：B

What difference between water and most other substances does the speaker discuss?

AScientists understand the structure of water molecules well.

BWater requires a lot of heat to change its temperature.

CWater expands when it changes from liquid to solid.

DLiquid water reflects a lot of sunlight.

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正确答案：C

Why does the speaker mention aquatic life?

ATo emphasize a difference between lakes where ice forms and lakes where it does not

BTo explain the importance of the insulating effect of ice at the top of bodies of water

CTo provide an example of a harmful effect of warming water temperatures

DTo identify a curiosity that has puzzled scientists for centuries

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正确答案：B

What difference between liquid water and ice does the speaker discuss at the end of the talk?

AIce temperatures change more quickly.

BIce can absorb more energy.

CIce is easier to see from space.

DIce reflects more light.

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正确答案：D