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

游客2024-10-18  7
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 " hardwired" to have more friends. [br] 【C3】
选项 A、anxious
B、likely
C、bound
D、glad
答案 B
解析 形容词辨析题。句意为：研究还表明，一个人拥有的“脸书”好友越多，他在现实中拥有的朋友数量可能也越多。依据后文，第二段第一句比较了拥有“脸书”好友圈较大的人与好友圈较小的人，两者在现实社会中拥有的朋友数量也可能有差别，原文中分别用了“tend to”和“are likely to”，因此likely“可能的”符合此处文意。本段介绍的是科学研究的客观发现，没有涉及主观的情绪和态度，因此排除anxious“焦急的”和glad“高兴的”；第二段明确提示，本句所陈述的发现只是一种倾向，故排除bound“注定的，必然的”。
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