官方真题Official5托福听力Lecture3文本+真题+答案解析

官方真题Official5托福听力Lecture3题目文本

Question 1 of 6

What is the main purpose of the lecture?

A. To discuss recent innovations in laboratory equipment.

B. To give an example of a practical use for a particular scientific technique.

C. To familiarize students with the chemical composition of paint pigments.

D. To show how researchers were able to restore a particular work of art.

Question 2 of 6

What does the professor imply when he mentions an art historian?

A. Art historians have been learning how to use spectroscopes.

B. Scientists need to learn how art historians analyze paintings.

C. Confirming the authenticity of artworks requires collaboration.

D. Spectroscopic analysis can help identify a painter’s techniques.

Question 3 of 6

Why does the professor discuss the presence of zinc in paint pigments?

A. To explain why some paints may deteriorate over the course of time.

B. To stress the need for caution when attempting to restore old artworks.

C. To show how pigments differ from varnishes and binding agents.

D. To show how spectroscopy can help establish the age of a painting.

Question 4 of 6

According to the professor, what is the primary advantage of spectroscopy over other laboratory methods for analyzing artworks?

A. It does not damage the artworks.

B. It provides a more accurate analysis than other methods do.

C. It uses equipment that can be transferred to other locations.

D. It can be used by individuals with little scientific training.

Question 5 of 6

What is one way the professor mention that can help with art restoration?

A. By re-creating the pigments and binding agents used by artists of earlier eras.

B. By removing pigments and binding agents that dissolve paintings over time.

C. By creating protective coatings of paint that do not damage original paintings.

D. By developing ways to safely remove paint added by previous restorers.

Question 6 of 6

Why does the professor say this?

A. He is searching for a synonym for the term.

B. He is not sure how much information the student need.

C. He is going to briefly address a related topic.

D. He is giving the students a writing assignment.

查看官方真题Official5托福听力Lecture3的答案解析请进入下一页→→→