問題詳情
請依下文回答第 39 題至第 42 題：What makes people smart? It is a question that scientists and philosophers have thought about for centuries,prompting complex calibrations, from head measurements to brain-bending tests. Yet the drive to probe the powers—andthe limits—of the human mind has been thwarted by the hard facts of life:the brain was virtually a black box, its innersecrets locked within. Now, scientists are using the latest technology to peer inside. Using machines such as the PETscanner and FMRI machines, which map the changes in the brain’s blood flow, researchers at U.C. Irvine and elsewhereare producing the first images of how gifted, and not-so-gifted, minds go about the task of thinking. In one study,Professor Richard Haier of U.C. Irvine found that brighter people have lower metabolic rate probably because their brainsare more efficient. However, when bright people are given harder tasks, their brains work harder than the averageperson’s. Apparently, brain activity depends, to some extent, on the difficulty level of the task and the level of effortrequired.
【題組】39 Why is it so hard to examine the powers and limits of the human brain?
(A)The hard facts of life cannot be measured.
(B)The inner secrets of the brain have not been revealed yet.
(C)The drive to test the human brain has been encouraged.
(D)Complex calibrations are prompted.
參考答案
答案：B
難度：適中0.584
統計：A(12),B(73),C(11),D(25),E(0)