单词：tRNA-guaninetransglycosylase
单词：tRNA-guaninetransglycosylase 相关文章
Alex wanted to become a citizen. He signed up for a citizenship class. He went to the first class. The teacher spoke only Spanish. All the other students spoke only Spanish. Alex spoke Spanish, too. He asked the teacher, Why are you speaking Spanish?
英语第1级听力-English Level 1
Alex wanted to become a citizen. He signed up for a citizenship class. He went to the first class. The teacher spoke only Spanish. All the other students spoke only Spanish. Alex spoke Spanish, too. He asked the teacher, Why are you speaking Spanish?
超级简单英语阅读
If your company offers a service, you may find that you have to deal with complaints from customers and clients. In this unit, we look at some phrases that may be helpful in this situation. 如果你们公司提供一项服务，你有可能发现你要处理来自顾客和代
商务英语
By Leta Hong Fincher Washington, DC 27 February 2007 watch Genealogy report Strom Thurmond and Al Sharpton A new genealogical study shows that a prominent African-American civil rights activist is descended from a slave owned in the mid-nineteenth c
2007年VOA标准英语（二月）
The Bierborse is an open-air event devoted to the art of brewing throughout the world. It is composed of two thirds beer-serving businesses and one third accompanying snack specialities. The range is supplemented by participants offering products typ
阅读空间
A new study finds that sounds conveying negative emotions could be understood across cultural boundaries more readily than the sounds of positive emotions. Related Links Disa Sauter's paper in PNAS Things like laughter, crying, sighing, grunting ...
VOA标准英语2010年(二月)