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D.The traditional wisdom holds people have themselves to blame for poverty.31.What is the passage mainly about?A.The historical suffering of the poor.B.Push for the poor to save themselves.C.An appeal for child poverty approach.D.A positive new deal to help poor children.DFor something that weighs only about three pounds,the human brain has a lot of responsibility.Deep within all those gray folds and creases()are the controls for everything you doMore than a century ago,scientists first mapped the brain as they worked to develop anunderstanding of each particular region.Early on,the maps were simple:Which part of the braincontrolled speech?Which controlled hearing?Having a detailed,accurate guide ensures that studiesare using the same points of reference and makes for more efficient,accurate investigations.Now,however,things are much more intricate.Researchers have just released an incrediblenew map of the brain,revealing nearly 100 new areas that were previously undiscovered orforgotten.Many experts are calling this a milestone in neuroscience according to the New YorkTimes.The new map has been published in the journal Nature.The new map draws on data collected by the Human Connectome Project,which studied 1,200people using high-powered MRI scanners to understand how brain circuitry(大脑神经元回路)works.For the study,the participants'brains were recorded while they laid in the scanner,whilethey did various math problems and memory tests,and while they listened to stories.Researchersdrew boundaries based on where these and previous tests seemed to match.They also looked atanatomical(解剖的)differences,measuring,for example,the amount of myelin(髓磷脂)-a fattysubstance that surrounds some neurons-in different areas of the brain."We have 112 different types of information we can tap into,"study co-author David Van Essenof Washington University Medical School told the New York Times.With all those variables()in hand,researchers eventually created a map that included 83already familiar areas of the brain,plus an additional 97 regions that were either previouslyundiscovered,or somehow forgotten and lost in scientific literature along the way.Some previouslyknown regions are how broken down into sub-regions with separate responsibilities.For example,the dorsolateral prefrontal cortex is a large area toward the front of the brain that's active during