TOEFL Listening: ETS-TOEFL听力机经 - K316810UYKI03U33P$

What are two aspects of Rembrandt's method that the professor says were confirmed by the analysis? A. The use of a preparatory painting that showed dark and light areas B. The division of the painting into separate sections C. The use of a full palette of colors throughout the painting process D. The use of a sketch on paper to guide the painting process