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This is the VOA Special English Development Report. Before refrigerators, homes usually had ice boxes. But another way to keep food cool without the need for electricity is to use an evaporative cooler. This is easy to make and does not even use ice.
VOA慢速英语2007年（二）月
This is the VOA Special English Development Report. Indonesian women sell their harvest in a traditional floating market Before refrigerators were invented, the next best thing was an ice box. But another way to keep food fresh is to use an evaporat
VOA慢速英语2009年（十一）月
Body Temperature 体温 Our body temperature is usually 36.5 degrees. 我们的体温通常是36.5摄氏度。 When we are sick, our body temperature goes up. 当我们生病时，体温会升高。 Sometimes, a high fever is very dangerous. 有时，高
与美国小学生一起学英文第3册
Mars 火星 Mars is a planet. 火星是行星。 It is next to the Earth. 它紧邻地球。 Its size is about one fourth of the Earth. 它约有四分之一个地球大。 Mars is not far from the Earth, but the environment is very different. 火星离
与美国小学生一起学英文第5册
How to build an evaporative cooler. Also, how to prepare fruits and vegetables for cold storage. Transcript of radio broadcast: 08 June 2008 This is the VOA Special English Development Report. Before refrigerators, homes usually had ice boxes. But a
VOA慢速英语2008年（六）月
A person suffering from Alzheimer's gradually loses touch with reality. It is one of the most dreaded diseases of aging. When you think about the functions that limit living independently and autonomously, loss of cognition is one of the major ones,
VOA标准英语2010年(三月)