单词：threonine aldolase
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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 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）
In 'Soy Yo' Video, Bomba Estreo Pays Tribute To 'What's Inside Of You' play pause stop mute unmute max volume 00:0004:37repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your
2016年NPR美国国家公共电台9月
RIO DE JANEIRO, March 13 (Xinhua) -- Brazil coach Luiz Felipe Scolari has given a surprise international call-up to Sao Paulo winger Osvaldo for friendlies against Italy and Russia later this month. The 25-year-old replaces Paris Saint-Germain starle
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By Anjana Pasricha New Delhi 11 September 2007 Bangladesh Nationalist Party activists gather before central office in Dhaka, Bangladesh, 10 Sep 2007 In Bangladesh, political parties have reopened their offices after the government eased a ban on poli
2007年VOA标准英语（九月）