Unit 5外刊阅读拓展-【拔尖特训】2023-2024学年九年级上册英语 译林版

外刊阅读拓展 ▶ “答案与解析”见P27 黑猩猩———聪明的模仿者 The baby chimp(黑猩猩) and her mother number among the members of the Sonso chimpanzee community. Scientists began focusing on these apes(猿) many years ago, and have never stopped studying them. In 2011, they noticed something interesting: Instead of just drinking directly from ponds or scooping(舀出) water with his hands or leaves, Nick, one of the group􀆳s heads, started something new. He used moss sponges(苔 藓 海 绵) to get clear water from the pond he liked to visit. Within a week, seven more chimps in the group used moss sponges to drink the clear water. In 2014, researchers counted 48 apes in the group using leaves or moss sponges to drink. Only a few older apes used the sponges, but the younger apes in the group were more likely to do this. Their mastery of moss sponges came from watching their mum, or another relative or friend, use them. Chimp mothers do the work of raising their young—usualy with the help of other females, who sometimes babysit. Babies cling(紧抱) to Mum􀆳s chest, and when they are about one year old, they ride on her back. Beyond just safety and food, it􀆳s a chance for babies to see everything in Mum􀆳s daily routine: how she picks bugs(虫) off her arms, how the adults tel one another who􀆳s in charge, and how their mum makes a sponge. ▲ They have to watch out for each other, after al. Chimps have social structures, so they must know who􀆳s friendly and who􀆳s not. Chimps read others􀆳 expressions to find out why they􀆳