单词:catalyst abrasion
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Economics Report - How an Allowance Helps Children Learn About Money This is the VOA Special English Economics Report. Many children first learn the value of money by receiving an allowance. The purpose is to let children learn from experience at an
By Lisa Schlein Geneva 30 May 2006 A child holds a small hammer that is used to crush stones in a quarry near Dawhenya, east of Accra, Ghana, Thursday, May 4, 2006 Child labor, worker safety and changing patterns in the international workplace are o
[00:00.00]Exercise 2.2 [00:10.82]Today, we will talk about choking. [00:13.67]In fact, choking is quite a common problem [00:17.08]in our daily life. [00:19.29]What's choking? [00:21.42]This is when someone has an object stuck in [00:24.98]his or her
By Efam Dovi Accra 22 August 2006 Women ministers and members of parliament from Anglophone West Africa countries are meeting in Accra to sharpen their leadership and advocacy skills. The Accra meeting, being organized by the Network of African Wome
SCIENCE IN THE NEWS - Learning the Basics of First Aid: What to Do Until Medical Help ArrivesBy Nancy Steinbach Broadcast: Tuesday, November 14, 2006 VOICE ONE: This is SCIENCE IN THE NEWS in VOA Spec
By Jessica Berman Washington 01 April 2008 For the past 50 years, the development of new drugs to treat tropical diseases that affect nearly one billion people has languished because it has not been profitable for drug manufacturers in the West. But