托福補習班多少錢

　Well, on the topic of ...technology has made..., I’d like to spend a few minutes on the ice industry, one of the major industry in the 1800.now, before refrigerators come to common use, people in rural areas often have a ware or a spring house to keep perishable fruits fresh...huge one, but a spring house was a small house that people would build over a spring. Farm families then rely on cool water from the spring to help keep their products or meat cool....boxes instead and they bought a lot of ice, put in these ice boxes and they packed all the milk or meat inside to keep them fresh. So until refrigerators..., the ice industry supplied city dwellers with these blocks of ice. Now, by 1800, people have learned how to harvest blocks of ice from lake and cut these ice with... and storing. These ice houses are enormous, among the largest structures anywhere in the country at that time. They are so important that they often had rail tracks going right up next to them. In addition to being