【推荐1】Some chimpanzees(黑猩猩)are much wilder when it comes to making beats, scientists have discovered. In a Ugandan rainforest, the chimps have developed their own drumming(击鼓)styles on tree roots. Researchers observed their drumming styles range from rock to jazz. One chimpanzee brought back the style of the late John Bonham, a drummer who played a piece of music, Whole Lotta Love, and is ranked as one of the best. “The chimpanzee makes very fast drums with many evenly separated beats. His drumming is so fast that you can hardly see his hands.” said Catherine, leading scientist of the study.

Drumming with feet and hands with their special calls is used to exchange messages through thick forests, even with miles between them. Ben the Alpha’s call was a close two quick beats and a distant third, sometimes fourth.

Catherine also said. “We could often recognize which chimpanzee was drumming, and it was a fantastic way to find the different ones we were looking for. So if we could recognize, we were sure they could.”

The team was surprised to note the chimpanzees only used their personalized drumming styles when on the move, showing that the chimpanzees could decide whether to be recognized or not. The research could also settle a problem about why these chimpanzees greet each other when they meet but are not observed to say goodbye when they part in the forest. “The chimpanzees don’t need to say goodbye because they’re effectively able to keep in touch.” Catherine said. These long-distance signals give the chimpanzees a way to recognize with each other.

The researchers’ next study will be to explore whether different drumming styles can lead to different drumming cultures among the different chimpanzee populations.

【推荐2】I was talking to my friend Sandy about our children. Sandy had recently moved into the neighborhood with her four kids: Jane, Joe, Christopher, and her youngest, eighteen-month-old Kim. She seemed happy to have kids nearby, until she saw our dog, Sam.

Sam, our shiny black dog, loved to play with the kids and protect them. But Sandy had a fear of dogs, and she started to back away as Sam approached. I grabbed Sam’s collar and made him sit, trying to ease Sandy’s discomfort.

Sandy mentioned that she needed to get her kids ready to go to their grandmother’s house. Just then, her door opened and her kids rushed out. Sandy shouted at them to stay away from Sam.

The kids huddled (蜷缩) around their mom, looking at Sam cautiously (谨慎地). Emma, my daughter showed the kids how to approach a dog slowly and properly. The kids were won over by Sam’s friendly nature, but I knew it would take some time for Sandy to change her viewpoint.

After that incident, we made sure that Sam didn’t go near our neighbors without me present. One day, when the kids were playing across the street. I noticed the eighteen-month-old baby heading towards a small hill. I saw a car approaching and shouted to everyone to watch the baby. Without hesitation, Sam rushed out the door and ran across the street towards the baby. He ran to the boy in time to gently push the baby away from the oncoming car. The kids cheered, completely unaware of the danger. They thought Sam had come to play.

Within a year, Sam had made friends with all the neighbors. Even Sandy started to warm up to Sam and would occasionally come over to give him a hug.