单词：metallohydrolase
单词：metallohydrolase 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
By Kurt Achin Seoul 27 September 2006 For an increasing number of South Koreans, being a family man means seeing less of the family than ever before. Many South Korean fathers stay at home and work while they send their wife and children abroad - of
2006年VOA标准英语（九月）
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）
By Amanda Cassandra New York 29 November 2006 Gold prices have reached record highs this year, fueling new interest in gold as an investment. But the allure extends far beyond its monetary value. Its importance as a natural resource, as a commodity
2006年VOA标准英语（十一月)
By Cathy Majtenyi Nairobi 11 February 2007 Multiple gold medalist and track legend, Michael Johnson, runs with children in Nakulabye, a suburbs in Ugandan capital Kampala (File) A global program to promote development through sports has been launched
2007年VOA标准英语（二月）