单词:two-wheelers
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This is the VOA Special English Education Report. California has a new program called the Digital Textbook Initiative. ARNOLD SCHWARZENEGGER: Starting this fall with high school math and science, we will be the first state in the nation -- the first
This is scientific America 60s science. I'm Steve Mursky. Got a minute?One of the aspirational letter is between now and 2030 to cut by 2/3 maternal mortality. Doctor Susan D`Helment is CEO of the ? Gates Foundation. On Jan 26th, she spoke with the s
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AS IT IS 2015-04-23 Earth Day 2015: Biking, Hiking and Planting Trees 2015年地球日:骑自行车、徒步旅行和植树 April 22 is the 45th anniversary of Earth Day. This years theme is Its Our Turn to Lead. The organization, Earth Day Network,