布什頭號(hào)顧問離職(1)

科學(xué)60秒:和藻類共生的蠑螈

A rolling stone gathers no____1____. But a salamander embryo can attract algae. Inside its tissues and cells. This intimate________—the first ever seen between algae and a vertebrate—is reveale...

告別寂靜的春天

故事Rachel Carson was a scientist and a bird watcher. She noticed, in the late '50s, the gradual disappearance of some birds, and linked it to our use of 1)pesticides. She wrote a book about her ...

甩開包袱，大干一場(chǎng)(1)

GM，美國通用汽車公司，最近和全美汽車工人協(xié)會(huì)達(dá)成了一項(xiàng)協(xié)議Labor relations in the American auto industry took a new turn this week with a deal that many are calling historic. General Motors and th...

美國會(huì)下周開始移民改革討論(1)

美國國會(huì)下周開始關(guān)于移民法改革的討論Immigration reform is a key priority for the Senate's top Democrat, immigration reform is also a priority for President Bush, who has proposed establishing a g...