【小站原创】官方真题Official7托福听力Lecture4文本+真题+答案解析

官方真题Official7托福听力Lecture4题目文本

Question 1 of 6

What is the lecture mainly about?

A. Explanations of how glaciers move.

B. Landscape changes caused by glacial movement.

C. Climate changes that influence glacial movement.

D. Causes of glacial formation.

Question 2 of 6

The professor discusses the process of basal slip.Put the steps in the correct order

.A.Friction between the glacier and bedrock is reduced

B.A liquid layer forms at the base of the glacier

C.The glacier begins to slide

D.Pressure is increased on the ice

Question 3 of 6

What factors are involved in the amount of deformation a glacier undergoes?Click on 2 answers.

A. The thickness of glacial ice.

B. The hardness of glacial ice.

C. The amount of water beneath the glacial ice.

D. The temperature of the glacial ice.

Question 4 of 6

What does the professor say about the speed of glaciers?

A. It affects the amount of glacial ice that forms.

B. It can be fast enough for movement to be noticeable.

C. It is reduced by cracks in the ice.

D. It is unusually high in colder regions.

Question 5 of 6

What does the professor explain when he says this?

A. A characteristic of ice that is related to glacial movement.

B. How scientists first discovered that glaciers could move.

C. That factors like temperature can affect the strength of ice.

D. Why deformation is the most common type of glacial movement.

Question 6 of 6

What does the professor imply about compression and extension?

A. He believes it accounts for a great deal of glacial movement.

B. He thinks it is a slower type of a glacial movement than basal slip.

C. He is not convinced that it is a type of glacial movement.

D. He does not agree that it causes fissures in glaciers.

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