問題詳情

III. Passage Completion (10%)Some research suggests that certain types of mental exercises—whether they are memory games on your mobile device or jotting down letters backward—might help our gray matter __31__ concentration, memory and visual and spatial skills over the years. “There is some evidence of a use-it-or-lose-it __32__,” says Dr. Michael Maddens, chief of medicine at Beaumont Hospital, Michigan. Makers of computer brain games, in fact, are __33__ into a market of consumers who have turned to home treadmills and gym memberships to maintain their bodies, and now worry that aging might take its toll on their mental muscle __34__.But mental exercises can help. The idea of mental __35__ marks a dramatic shift in how we understand the brain these days. “We want to stretch and flex and push the brain,” says Moriah Thomason, scientific adviser to www.Lumosity.com, one of the fastest-growing brain game __36__. “We used to think that what you’re born with is what you have through life. But now we understand that the brain is a lot more plastic and flexible than we ever __37__.”Still, just as it does on the rest of your body, aging takes its toll. The protective covering of the neural cells—white matter—begins to __38__ first. The gray matter also starts to get smaller, but more slowly. Neurotransmitters, or chemical messengers, therefore decrease. But __39__ the brain stimulates neural pathways—those tentacles that look like tree branches in a cluster of brain cells. It boosts the brain’s __40__ and connectivity, refueling the entire engine.
(A) tapping
(B) appreciated
(C) shrink
(D) phenomenon
(E) chemistry(AB) maintain (AC) websites (AD) challenging (AE) workouts (BC) as well
31

參考答案

答案：A,B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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