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Emerging evidence in humans suggests a typically Western high-fat, high-sugar "junk food" diet can quickly undermine your brain’
Emerging evidence in humans suggests a typically Western high-fat, high-sugar "junk food" diet can quickly undermine your brain’
admin
2023-01-30
23
问题
Emerging evidence in humans suggests a typically Western high-fat, high-sugar "junk food" diet can quickly undermine your brain’s appetite control. After indulging in a week-long binge (大吃大喝 ) of waffles, milkshakes and similarly rich foods, researchers in Australia found young and healthy volunteers【C1】________worse on memory tests and experienced a greater【C2】________to eat junk food, even when they were already full.
The findings suggest something is wrong in the hippocampus (海马体) —a region of the brain that supports memory and helps to【C3】________appetite. When we are full, the hippocampus is thought to quieten down our memories of delicious food, thereby【C4】________our appetite. When it’s disrupted, this control can be seriously undermined.
Over the years, extensive research on mice has found the function of the hippocampus is very【C5】________to "junk food", but this has only recently been observed in young and healthy humans. In 2017, after a week of Western-style breakfasts of toasted sandwiches and milkshakes, researchers found【C6】________performed worse on learning and memory tests which are typically【C7】________on the hippocampus.
Now, in this latest study the team has found that not only do such high-fat, high-sugar diets impair memory in humans, they also appear to【C8】________affect our ability to control our appetite.
"As this is an emerging area, and with much still to be learned about how these processes inter-relate, our【C9】________are of course tentative," the authors admit. Nevertheless, the foundations for claims like this are quite extensive, especially amongst the animal literature. What’s more, the results, even for a【C10】________sample size, are compelling.
A) access F) distinguished K) reducing
B) conclusions G) impressions L) regulate
C) dependent H) occupying M) scored
D) desire I) participants N) sensitive
E) directly J) recently O) small
【C4】
选项
答案
K
解析
动词辨析题。空格前为副词thereby,空格后是名词词组our appetite,因此空格位于thereby doing sth.结构中,应填入动词的-ing形式。空格所在句指出,当我们吃饱了,海马体被认为会使我们的美食记忆不再活跃,从而一我们的食欲。由此推断,如果关于美食的记忆被抑制,那么胃口也会变差,因此空格处应填入含有“减少,降低”意义的动词,故答案为K)reducing。
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0
大学英语四级
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