The human brain has the ability to constantly form new networks and connections between brain cells. This means the brain has an almost magical ability to change. This characteristic is 26 apparent in a new study, focusing on people who underwent a hemispherectomy, a surgical procedure in which half of the brain is removed to treat illness.
The findings showed that, despite missing half of this critical 27 ,participants could function well. This was because the 28 half of their brain strengthened. In fact, researchers found that connections一 and thus communication- between parts of different brain networks are actually stronger in people who had hemispherectomies than in people with intact brains. This 29 that the brain is able to compensate for loss of certain brain structure.
There are many other cases in the medical 30 that document the brain's amazing ability to 31 . For example, a young boy had a significant portion of his brain removed for medical reasons, which included the part of the brain 32 for sight. But a few years after his surgery, scientists found that he could 33 see. They determined that this was because other parts of his brain took over the missing parts 34 tasks. Another study involved people who could smell, despite missing the region in the brain that processes information about smells.
Though they are not sure how these individuals 35 the ability to smell, scientists believe it is possible that another part of the brain took on that task.
A) adapt I) responsible
B) hardly J) retained
C) indicates K) still
D) insist L) strategy
E) literature M) transformed
F) organ N) underlines
G) particularly 0 ) visual
H) remaining
答案解析:
26. G根据上下文,前一句提到大脑有变化的能力是一种普遍特征,而本句通过一项针对半球切除术(一种极端情况)的研究来具体说明。可知此处需要一个副词来强调这种特征在该研究中尤为明显”,所以选 particularly。
27. F根据上文 "half of the brain is removed" (一半的大脑被移除),可知此处指代的是大脑这个器官”。"organ" 意为器官”,填入后表示尽管缺少了这个关键器官的一半”,符合语境。
28. H根据前文 "half of the brain is removed" (一半大脑被移除),可知参与者功能的正常运作,是因为另一半大脑,即剩余的”大脑得到了加强。所以选 remaining。
29. C 根据句意,前文描述了研究发现(半球切除患者的大脑网络连接更强),本句是对这一发现的总结和推论。可知此处需要一个动词,表示这表明”或这说明了”大脑能够进行补偿。所以选 indicates。
30. E根据句中的 "cases" (案例) 和 "document" (记录),可知此处指的是医学文献”或医学著作”中记载的案例。"medical literature" 是一个固定搭配,意为医学文献”,所以选 literature。
31. A根据文章主题和下文的具体案例(男孩失明后恢复视力),可知此处是在描述大脑适应”变化、弥补损失的能力。所以选 adapt。
32. I根据句意,男孩被切除的部分包括负责”视力的那部分大脑。此处需要一个形容词,与 "for" 搭配,构成 "be responsible for",意为对...负责”,是...的原因”。所以选 responsible。
33. K根据句意,尽管负责视觉的大脑部分被移除,但几年后,他依然”能够看见。此处需要一个副词,表示仍然,依然”,强调在不利情况下的持续状态。所以选 still。
34.O根据“other parts of his brain took over the missing parts...tasks”可知,大脑其他部分接管了缺失部分的“视觉”任务,“visual”符合,所以34选O。
35.J根据“the ability to smell”可知,这里说的是他们不确定这些人是如何“保留”了嗅觉能力的,“retained”符合,所以3选J。
