Cases of the flu peak in winter in the U.S., but why? A new study suggests it's not the heat, but huminity. Or lack thereof. Because in temperate regions, the influenza virus fares best when the weather's dry. That's according to work published in th

发表于:2018-12-02 / 阅读(71) / 评论(0) 分类 Scientific American(十二)月

Body Signs 不容忽视的人体警讯 by Rebecca Fratzke We sometimes need expensive tests to determine our state of health, but often our bodies tell us all we need to know. Growing up, we're taught which bodily signs are causes for concern. _(1)_

发表于:2018-12-08 / 阅读(79) / 评论(0) 分类 常春藤解析英语

She is busy after school. She comes home after school. She does her homework. She takes the dog for a walk. She feeds the dog. She eats dinner. She clears the table. She brushes her teeth. She watches TV. She watches for two hours only. Her parents a

发表于:2018-12-31 / 阅读(33) / 评论(0) 分类 儿童英语小故事

Mucus: Your Friend Against Bacteria 粘液助你对抗细菌 When you are sick with a cold or the flu, you may have a runny nose. Why is it called a runny nose? Because of the mucus flowing and dripping from your nose. Yucky! But, guess what? Mucus i

发表于:2019-01-12 / 阅读(50) / 评论(0) 分类 2016年VOA慢速英语(一)月

But the book also reinforced his tendency to embrace extreme diets, which included purges, fasts, or eating only one or two foods, such as carrots or apples, for weeks on end. 但这本书也进一步将他推向了极端的饮食习惯,包括催吐、

发表于:2019-01-22 / 阅读(37) / 评论(0) 分类 乔布斯传

Science and technology 科学技术 Microbiomics 微生物组学 A virus shield 病毒防护 Viruses help keep people disease-free 病毒能够帮助人类免遭疾病 THE story of the microbiomethe community of tiny organisms that coexist symbiotica

发表于:2019-02-24 / 阅读(77) / 评论(0) 分类 经济学人科技系列