Podcast is sponsored from the people of American Chemistry, who provide the plastics, medicines, and innovations that make life modern. Learn more at americanchemistry. com. This is Scientific American's 60-Second Science, Im Karen Hopkin. This will

发表于:2018-12-24 / 阅读(34) / 评论(0) 分类 Scientific American(七)月

(man) Today I want to discuss fossil fuels such as coat, oil, and natural gas. The term fossil fuel refers to the trapped remains of plants and animals in sedimentary rock. You see, living plants trap energy from the sun by the process of photosynth

发表于:2018-12-30 / 阅读(35) / 评论(0) 分类 托福听力短文

[00:05.49]Reading [00:08.36]A PIONEER FOR ALL PEOPLE [00:12.43]He wants everyone to call him a farmer,for that's how he regards himself. [00:19.28]Although he is one of China's most famous scientists, [00:24.45]Yuan Longping works the land to do his

发表于:2019-01-10 / 阅读(188) / 评论(0) 分类 高中英语人教版必修

AGRICULTURE REPORT – June 25, 2002: Organic Farming Study By George Grow (Photo -Scott Bauer) This is the VOA Special English Agriculture Report. Agricultural scientists in Switzerland have demonstr

发表于:2019-01-11 / 阅读(33) / 评论(0) 分类 农业与发展

AGRICULTURE REPORT - Compost: an Organic Way to Better Soil and Crops By Gary Garriott Broadcast: Tuesday, July 05, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Many farmers im

发表于:2019-01-30 / 阅读(101) / 评论(0) 分类 农业与发展

Listen to the dialogues and fill in T for True, F for False. 英语对话1 A:Does this plant need a lot of sunlight? B:Yes, it's a dessert plant. 英语对话2 A:Should this plant be watered everyday? B:No. twice a week will be enough. 英语对话3

发表于:2019-02-17 / 阅读(95) / 评论(0) 分类 英语听力练习题