填空题.Being a social butterfly just might change your brain: In people with a large network of friends and excellent social skills, certain brain regions are bigger and better connected than in people with 31 friends, a new study finds. The research, 32 here Tuesday (Nov. 12) at the annual meeting of the Society for Neuroscience, suggests a connection between social 33 and brain structure. "We're 34 in how your brain is able to allow you to navigate in 35 social environments," study researcher MaryAnn Noonan, a neuroscientist at Oxford University, in England, said at a news conference. 36 , "how many friends can your brain handle?" Noonan said. Scientists still don't understand how the brain 37 human behavior in increasingly complex social situations, or what parts of the brain are 38 to deviant social behavior associated with conditions like autism and schizophrenia. Studies in macaque monkeys have 39 that brain areas involved in face processing and in predicting the 40 of others are larger in animals living in large social groups than in ones living in smaller groups. A. linked E. interested I. complex M. surprised B. intentions F. fewer J. typically N. interactions C. basically G. committed K. less O. presented D. simple H. shown L. manages