試題詳解

46. What is the best paraphrase for the underlined sentence in Paragraph 1?
(A) All of these theories resulted from careful research, but they aren’t yet proven.
(B) Some of these theories make sense, and they should be considered.
(C) These theories are not proven, and they contradict each other.
(D) These theories are similar to each other and are believed by many people.
(E) All of these theories resulted from careful research are proven effective.