2026年2月托福机经套卷(第4套)Listen to an Academic Talk / 24 道题

Listen to an Academic Talk / 2

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What is the main focus of the talk?

ARestoring ancient structures using modern materials

BA building material used by the ancient Romans

CNew research on the design of Roman amphitheaters

DThe ancient origins of a modern construction method

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正确答案：B

What does the speaker imply about volcanic ash?

AIt provides evidence that volcanoes damaged Roman buildings.

BIts presence in Roman buildings was discovered only in recent decades.

CIt is less important for the durability of ancient Roman buildings than researchers used to believe.

DIts use may lead to improvements in modern building techniques.

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正确答案：C

What does the speaker say about chunks of calcium carbonate in concrete?

AThey result from not enough mixing.

BThey enable concrete to repair itself.

CThey can cause concrete to crack.

DThey cannot react with water.

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正确答案：B

What is the speaker's attitude toward modern concrete?

AHe is impressed by the complex methods of producing it.

BHe is excited about a new way of producing large amounts of it quickly.

CHe believes that it was originally inspired by the ancient Romans.

DHe thinks that it needs major improvement.

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正确答案：D