单词：lac operon
单词：lac operon 相关文章
Ross Dunn Witnesses say hundreds of Israeli soldiers have been deployed in southern Gaza. The forces, which include armored, engineering and infantry units, backed by tanks, bulldozers and helicopter
VOA2004（上）--巴以冲突
Chinese authorities, including Foreign Minister Wang Yi, have been promoting the Belt and Road Initative to Latin American and Caribbean countries as part of sessions now underway in Chile's capital, Santiago. Tie between China and Latin America and
2018CRI中国国际广播电台
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单词解析速记
EDUCATION REPORT - Schools Offer Help for Students Displaced by Hurricane Katrina By Nancy Steinbach Broadcast: Thursday, September 08, 2005 I'm Barbara Klein with the VOA Special English Education Re
教育与新闻
By Noel King Khartoum 06 June 2007 Officials of the United Nations and the International Organization for Migration, in coordination with the Sudanese government, say they have returned 100,000 former refugees and internally displaced persons to sout
2007年VOA标准英语（六月）
unit 410 打越洋电话至北京 dialogue 英语情景对话 A:Opercrtor, I want to make a collect overseas phone call to Beijing. A:接线生，我要打一通对方付款的越洋电话到北京。 B:Whom would you like to talk to? B:您要找哪？
高频英语口语对话