单词：impatiens argenta hook.f. et thomas
单词：impatiens argenta hook.f. et thomas 相关文章
We humans are known to help out members of our own families. When it comes to business we call it nepotism. Now plants have demonstrated the same predilection, in a study published in the American Journal of Botany. Previous research showed that plan
Scientific American(十一)月
Plants Share Light If Neighbor Is Related A study in the American Journal of Botany finds that plants can tell if they're next to a relative and will grow to allow the kin more access to light. Cynthia Graber reports. We humans are known to help out
60秒科学
By Michael Bowman Buenos Aires, Argentina 26 October 2007 Voters in Argentina are preparing to elect a new president, along with legislators and provincial governors. For many voters, economic matters top their list of concerns. In years past, Argent
2007年VOA常速英语（十月）
By Michael Bowman Buenos Aires 28 October 2007 Argentines are preparing to go to the polls Sunday to elect a new president, along with legislators and provincial governors. VOA's Michael Bowman reports from Buenos Aires, few Argentines are expressing
2007年VOA常速英语（十月）
By Michael Bowman Buenos Aires 28 October 2007 Polls have closed in Argentina, where citizens voted for a new president, plus legislators and provincial governors. VOA's Michael Bowman reports from Buenos Aires. More than 20 million Argentines are be
2007年VOA常速英语（十月）
BUENOS AIRES, March 14 (Xinhua) -- Argentine President Cristina Fernandez on Wednesday announced that the South American country will host Formula One races in 2013, 2014 and 2015. The city of Mar del Plata, 400 kilometers south from Buenos Aires, wi
英语新闻