2026年1月托福机经套卷(第10套)Listen to an Academic Talk4 道题

Listen to an Academic Talk

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Why does the speaker mention horseshoe crabs?

ATo point out how trilobites adapted to life in the sea

BTo help explain why trilobites went extinct

CTo emphasize how hard trilobites' exoskeletons were

DTo describe what trilobites looked like

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正确答案：D

What does the speaker say about eyes with thousands of small lenses?

AThey were helpful for producing sharp images.

BThey were an unusual characteristic in trilobites.

CThey were effective for seeing movement.

DThey covered only a small area of the trilobite's head.

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正确答案：C

What did researchers learn from the fossil in the study?

AAdult trilobites had an eye in the middle of the forehead.

BTrilobites had three joints on each of their legs.

CTrilobites grew more body segments throughout their lives.

DYoung trilobites slowly developed hard exoskeletons.

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正确答案：A

What does the speaker imply about the fossil in the study?

AIts exoskeleton was lighter than expected.

BIts poor condition provided a benefit.

CIt was the first fossil discovered of a trilobite in a larval stage.

DIt was found near fully-preserved trilobite fossils.

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正确答案：B