必修第一册 UNIT 1 LIFE CHOICES（word练习）-【导学教程】2025年英语新编高考大一轮总复习（北师大版）

[对应学生用书P483] A级　阅读提升练 Ⅰ.阅读理解 A (2023·安徽十校联考)Young kids' brains are very sensitive to their moms' voices, science has shown. But as kids grow into teens, everything changes. Teenagers' brains are now more tuned in to strangers' voices than those of their own moms', new research shows. The researchers scanned the brains of 7­to­6­year­olds as they listened to things said by their moms or by unfamiliar women. The words were pure gibberish:_teebudieshawlt, keebudieshawlt and peebudieshawlt.Using such meaningless words allowed the scientists to study voices on their own, not what they were saying. As the kids listened, certain parts of their brains became active. This was especially true in brain regions that help us to detect rewards and pay attention. Daniel Abrams, a researcher at Stanford University School of Medicine in California, and his colleagues have already known that younger kids' brains respond more strongly to their mom's voice than to a stranger's. “In adolescence, we show the exact opposite of that，” Abrams says. “These areas in the adolescent brain don't stop responding to moms' voices，” Abrams says. It's just that unfamiliar voices become more rewarding and worthy of attention. Here's why: As kids grow up, they expand their social connections beyond their family.So their brains need to begin paying more attention to that wider world. But moms' voices still have special power, especially in times of stress, one 2011 study with girls involved showed. Levels of stress dropped when these stressed­out girls heard their moms' voices on the phone. The brain seems to adapt to new needs that come with adolescence. “As we mature, our survival depends less and less on our moms' support，” says Leslie Seltzer, a biological anthropologist at the University of Wisconsin­Madison. “Instead，” she says, “we rely more and more on our friends and others closer to our own age.” “So while both teens and their parents may sometimes feel frustrated by missed messages, that's