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Online social networks are massively influential, yet we understand very lit

游客2023-11-12  46
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] 【C6】
选项 A、premise
B、decision
C、idea
D、advice
答案 C
解析 名词辨析题。句意为：这些发现支持这样一个观点，即大多数“脸书”用户都是用网络来支持已经存在的社会关系，保持或加强这些友好关系，而不是与完全陌生的、虚拟世界的朋友建立关系网。空格后，that引导同位语从句，说明前面空格名词的具体内容，在这里讲述的是一种发现或观点，因此idea为本题答案。从句中所述内容显然不是advice“建议”或decision“决定”；根据上下文，作者没有在该句之后再作推论，因此该句内容不是premise“前提”。
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