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[00:04.49]Scientific Attitudes [00:06.97]科学的态度 [00:09.46]Science had its beginning when man started asking questionsabout his environment. [00:14.18]科学起源于人类开始对自身环境产生疑问的时候. [00:18.91]He wondered where the sun went at night an
大学英语自学教程上
Rainforests exist because it rains a lot and that makes forests grow, right? Well, not so fast. What if its not the rain that makes the forests? What if its the forests that actually generate the rain? That is the contention of a paper in BioScience
Scientific American(五)月
Globes showing environmental challenges are lining the National Mall for Earth Day activities. Week-long activities to commemorate the 40th anniversary of Earth Day in the United States have kicked off with an eco-village on the National Mall and gre
VOA标准英语2010年(四)月
Science and technology 科学技术 R D in America 美国研发战略 Bad medicine 医学受阻 Cutting American health research will harm the world 美国削减医药研究经费，影响波及整个地球 BARACK OBAMA, in his state-of-the-union spe
经济学人科技系列
BEIJING, Aug. 24 (Xinhua) -- Chinese people were more willing to keep foreign currencies and sell their yuan-denominated assets in July, data from the State Administration of Foreign Exchange (SAFE) has indicated. Individuals and institutions exchang
英语新闻
U.S. lawmakers say time is running out for a congressional super committee to identify $1.2 trillion in deficit reduction during the next 10 years. Partisan disagreements remain on how best to improve Americas fiscal health, despite a softening of ri
英语新闻