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Online social networks are massively influential, yet we understand very lit
Online social networks are massively influential, yet we understand very lit
游客
2023-11-12
45
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问题
Online social networks are massively influential, yet we understand very little about the impact they have on our brains. Recently, scientists have found a direct 【C1】______ between the number of Facebook friends a person has and the size of【C2】______ brain regions. The study also shows the more Facebook friends a person has, the more real-world friends he is【C3】______to have.
Facebook users who have a【C4】______of friends also tend to have smaller circles of friends in the real-world and,【C5】______ those who have thousands of friends on Facebook are likely to have larger circles offline, according to the study. The findings support the【C6】______ that most Facebook users use the site to【C7】______their existing, real-life social relationships, maintaining or reinforcing these friendships,【C8】______creating a network of entirely new,【C9】______friends.
The researchers scanned the brains of 125 university-aged Facebook users,【C10】______ these scans to the size of their friend networks online and the real-world. Those with larger Facebook networks had larger amounts of grey matter in several regions of the brain. One of these regions, the amygdala, is 【C11】______with processing memory and emotional responses. Pairing this【C12】______ another recent study, the researchers show increased volume grey matter in the amygdala【C13】______ a larger network of real-world friends.【C14】______these studies show a large network of online friends also point to an increased volume of grey matter—【C15】______ information processing occurs. In addition to brain scans, the participants were asked questions 【C16】______ to compare the size of their online networks to the size of their real-world networks.
The study【C17】______the correlation between the number of friends online【C18】______ offline. Still, it is not possible from the【C19】______to say whether having more Facebook friends makes the regions of the brain larger【C20】______ whether some people are "hard-wired" to have more friends. [br] 【C20】
选项
A、while
B、but
C、or
D、and
答案
C
解析
逻辑衔接题。句意同上。空格处的连词连接两个分句,而两个分句间的关系显然是互相排斥的,因此应为选择关系,四个选项中只有or表示选择关系,故为答案。while表示时间关系,but表示转折关系,and表示并列关系,因此均应排除。
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