試題詳解

48. Which sentence from the article gives a main idea?
(A)Scientists have proposed several explanations for the Flynn effect.
(B)Because we take so many tests in our lives, we learn test-taking techniques that help us perform better on any test.
(C)Test-takers didn’t do better on the arithmetic or vocabulary sections of the test.
(D)For example, one part of the test shows a set of abstract shapes, and test-takers must look for patterns and connections between them and decide which shape should be added to the set.