試題詳解

37. Which of the following sentences can best express the main idea of the passage?
(A) College classrooms are often drab and dreary places.
(B) Research shows that unattractive classrooms are unappealing and may adversely affect academic performance.
(C) Wolling and Montage selected two identical classrooms to conduct their research.
(D) Both teachers and students like the newly decorated classrooms.