A-A+
A.The density of some gray matter increased.B.
问题详情
A.The density of some gray matter increased.
B.The density of some gray matter decreased.
C.The area of the gray matter became bigger.
D.The area of the gray matter became smaller.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
Whatisthechangeinpeople’sbrainswhentheirIQscoresincreased?A．Thedensityofsomegraymatterincreased．B．Thedensityofsomegraymatterdecreased．C．Theareaofthegraymatterbecamebigger．D．Theareaofthegraymatterbecamesmaller．详解研究人员发现，当IQ分数上升时，大脑中某些区域的灰质密度有所上升，故答案为A．。
