The agriculture revolution in the nineteenth century involved two things:the invention of labor-saving machinery and the development of scientific agriculture.(1)_______________________.“In Europe”, said Thomas Jefferson,“the object is to make the most of their land, labor being sufficient;here it is to make the most of our labor, land being abundant”.It was in America, therefore,that the great advances in nineteenth-century agricultural machinery first came.(2)_______________________.By 1860，most of the machinery in use today had been designed in an early form.The most important of the early inventions was the iron plow.As early as 1890 Charles Newbolt of New Jersey had been working on the idea of a cast-iron plow and spent his entire fortune in introducing his invention.The farmers, however, would home none of it,claiming that the iron poisoned the soil and made the weeds grow.Nevertheless, many people devoted their attention to the plow,until in 1869, James Oliver of South Bend, Indiana,turned out the first chilled-steel plow.
1.Labor-saving machinery naturally appeared,first were "labor was..."
2.At the opening of the century with the exception of the ......,farmers could have carried practically all the existing agricultural tools on their backs.
1. labor-saving machinery naturally appeared, first was" labor was scarece"
2. at the opening of the century, with exception of the fruit plow, farmers could have carried particularly all of existing agriculture tools.
1)Labor-saving machinery naturally appeared ,first were labor was guess
2)At the openly of the century,with exception of the fruit proud ,farmers could have carried particularly all of exisiting agricultural tools on the backs
1)Labor-saving machinery naturally appeared ,first were labor was guess
2)At the openly of the century,with exception of the fruit proud ,farmers could have carried particularly all of exisiting agricultural tools on the backs
1)Labor-saving machinery naturally appeared ,first were labor was guess
2)At the openly of the century,with exception of the fruit proud ,farmers could have carried particularly all of exisiting agricultural tools on the backs
1)Labor-saving machinery naturally appeared ,first were labor was guess
2)At the openly of the century,with exception of the fruit proud ,farmers could have carried particularly all of exisiting agricultural tools on the backs
发表于 2011-12-12 11:39
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发表于 2012-8-11 21:57
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