Almost magically, they form a temporary nest of their own bodies. The larvae and food are taken into the nursery at its centre. Tomorrow they will do the whole thing again, marching for two to three weeks to reach fresh hunting grounds, where they ca

发表于:2018-12-26 / 阅读(17) / 评论(0) 分类 自然百科2011年

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Climate change affects seasonal eventsspring flowers open earlier, songbirds breed sooner. But what about mammals? A new study documents the effect on a

发表于:2019-01-08 / 阅读(36) / 评论(0) 分类 Scientific American(六)月

Pecos Bill, An American Folk Tale 美国民间故事《佩科斯比尔》 Today we tell a traditional American story called a tall tale. A tall tale is a story about a person who is larger than life. The descriptions in the story are exaggerated much

发表于:2019-01-12 / 阅读(33) / 评论(0) 分类 2015年VOA慢速英语(一)月

Obama Unveils the First Puppy 第一犬 亮相 The world has been watching US President Barack Obama closely since he took office in January this year to see whether he makes good on his promises about the economy, foreign policy and health care. But

发表于:2019-02-13 / 阅读(16) / 评论(0) 分类 英语听力精选进阶版

集体名词的定义: 集体名词是同一类许多个体的集合的总称。 集体名词中有的是可数名词,如: family 家庭 group 小组 team 队 police 警察 有的是不可数名词,如: clothing 衣服 furniture 家具 集体

发表于:2019-02-18 / 阅读(185) / 评论(0) 分类 英文语法词汇

Spot Dictation We used to live in a _____in _____London.When the family got _____, we moved to a _____house in Winbeldon , which is in South London. The house was bulit in _____but we only moved in five years ago. _____we have three bedrooms . Two of

发表于:2019-02-27 / 阅读(95) / 评论(0) 分类 听听测测