纳米技术在医疗上的应用(1)

美文听写:直面内在的敌人(上)

adj. 有确实根据的,有效的,正当的Facing the Enemies Within We are not born with courage,but neither are we born with fear. Maybe some of our fears are brought on by your own experien

美文听写:学无止境(上)

1. engineering n.工程(学)，工程师行业 2. frightened adj. 受惊的, 受恐吓的7 so much to learn It was the last day of final examination in a large Eastern university. On the steps of one bui...

“喷火蚂蚁”(1)

“喷火蚂蚁”是一种来自巴西的物种，如今在美国，它已成为一大生物公害Farmers in parts of the United States have struggled for years with an invasion of red imported fire ants from Brazil. These inse...

举世瞩目的兼并案(1)

发生在美国TEXAS的兼并案受到了全世界的关注，有什么特别呢？gBig business deals do not often come with a promise to cut greenhouse gases. But that was part of a deal this week for TXU, the biggest e...