Like so many of us, 56-year-old Allena Hansen, went out to walk her dogs, two of them, in fact, in the woods, on her property in southern California. She never expected to be attacked by a bear and not just any bear, a 150-pound black bear. She reall

发表于:2018-12-11 / 阅读(64) / 评论(0) 分类 万花筒2008年

Humans are pegged to a 24-hour cycle. We're locked into it not just by day and nighttheres the master timepiece in the brain called the circadian clock. But it doesn't make sense to live by a 24-hour clock in the Arctic, where it's dark or light for

发表于:2018-12-24 / 阅读(75) / 评论(0) 分类 Scientific American(三)月

Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,

发表于:2018-12-31 / 阅读(66) / 评论(0) 分类 英语听力文摘 English Digest

Are you enjoying your Summer? It is in full swing now. The clothes shops are full of swimming suits, bikinis, and barbecue equipment. Flowers are out, and most families find a swimming pool to enjoy. There were end of year celebrations for schools, h

发表于:2019-01-01 / 阅读(50) / 评论(0) 分类 英语博客 A cup of English

人类按照24小时一循环的作息规律来生活,是因为大脑中有昼夜节律钟的协调。 研究发现,驯鹿等北极动物,在北极持续数周白天或黑夜里生活时,是没有昼夜节律钟的。 How Its Internal Clock I

发表于:2019-01-02 / 阅读(96) / 评论(0) 分类 60秒科学

Theyre everyones worst nightmare when it comes to swimming in the ocean: great white sharks. Thats despite the fact that the number of fatal shark attacks annually can usually be counted on the fingers of one still attached hand. But a new study find

发表于:2019-01-08 / 阅读(89) / 评论(0) 分类 Scientific American(十二)月

Want to Lose Weight? Listen to Yourself Eat From VOA Learning English, this is the Health and Lifestyle report. Restaurant chefs, home cooks, and foodies -- people who love good food -- often say that we eat with all of our senses. First, we use our

发表于:2019-01-12 / 阅读(66) / 评论(0) 分类 2016年VOA慢速英语(四)月

MARY LOUISE KELLY, HOST: This may not be your usual breakfast, but care for some chili-fried grasshopper? Why, yes, it's a crunchy popular snack in parts of northeastern Nigeria, as NPR's Ofeibea Quist-Arcton reports. OFEIBEA QUIST-ARCTON, BYLINE: Th

发表于:2019-01-16 / 阅读(74) / 评论(0) 分类 2017年NPR美国国家公共电台7月

我们今天要讲带有bit这个词的习惯用语。 Bit有好多不同的意思,但是在今天要讲的习惯用语里bit解释马嚼子,就是连着缰绳上套在马嘴巴上的金属部分。骑手一拉缰绳,马嚼子就被拉进马嘴巴

发表于:2019-02-06 / 阅读(103) / 评论(0) 分类 美国习惯用语

Simon and Marie hadn't been to a movie theater in years. He didn't like theaters because of certain people. Certain people like to talk during a movie. Certain people like to kick the seats in front of them. Certain people like to eat loudly. Certain

发表于:2019-02-15 / 阅读(194) / 评论(0) 分类 英文短篇故事(纽约)

Topics: Convenience stores, eating and drinking noises, colleague versus associate versus fellow, to sign in versus to sign off versus to sign on versus to sign up Words: slushees bulletproof glass armed robbery taboo to chomp to crunch to smack to w

发表于:2019-02-15 / 阅读(76) / 评论(0) 分类 美语听力 English Cafe