课时作业18 Human Biology+写作专练（六）-（课时作业）【红对勾讲与练】2024版新高考英语大一轮复习全新方案（北师大版）

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#4 课时作业 18　 HUMAN BIOLOGY Ⅰ. 阅读理解 " (2023·江苏镇江高三期初考试) Parenting techniques may have long-lasting consequences for behavior—even when it comes to dogs. Researchers at the University of Pennsylvania studied the early development, parenting and the following performance of 98 puppies who underwent guide dog training. Dogs who received more independence and less support from their mothers were more likely to be successful in becoming a guide dog. The study was published in the journal Proceedings of the National Academy of Sciences. Mom-pup interactions were used to define how highly involved the puppy􀆳s mothers were. Puppies raised with highly involved mothers were more likely to be released—or dropped out from the guide dog program—compared to those with less attentive mothers. “Too much of a good thing can be a bad thing,” said lead study researcher Emily Bray. “Although the study couldn􀆳t definitely point to what was driving this effect, one possibility is that the dogs that are having overbearing ( 专横的) mothers are never given the chance to deal with small challenges on their own, and is harmful to their later behavior and outcome in their problem- solving. Another possibility is that the puppies for whom the mothers are always around are also the most anxious or stressed,” she explained. “What I was happy about was that there is a study being done about early life experiences in dogs,” another researcher Dolores Holle said. “ If the mom is trying to protect her pups against small challenges, then