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  3. The invention of irrigation is meaningful because it could help to From the first four paragraphs, we can infer that the dawn o

The invention of irrigation is meaningful because it could help to From the first four paragraphs, we can infer that the dawn o

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问题 The invention of irrigation is meaningful because it could help to
From the first four paragraphs, we can infer that the dawn of civilization
选项 A、was accompanied by hardships of human existence.
B、is a mystery as yet unknown to mankind.
C、can be attributed to the innovative sparks of ancestors.
D、was recorded by history books ending at that time.
答案A
解析 本题问从前四段可以推出文明的起源怎么样。首段末句提到灌溉的发明表面看起来使农民更加辛苦，但是却促进了文明的发展。随后三段则详细讨论气候的变化使农业变得辛苦，但同时也促进了文明的发展。由此可以看出，文明与人类的艰辛相辅相成的。故"伴随着人类生存的艰辛"正确。是人类还不知道的秘密：第三段首句提到"far from clear"，但文中指的是农民如何学会灌溉还不是非常清楚(但文中也提出了一种观点)，而不是对文明的起源不清楚。首段末句已经明确说明灌溉使农业产量增加，从而促进了文明的发展。可归因于祖先们的创造火花：过于片面。文明的起源虽然离不开某些人的智慧火花，但宫不是决定因素。气候的变化迫使人们必须寻求更好的耕种方式，从而逐渐发明了灌溉的方式，这才是决定性的。被结束于那时的历史书所记载：第四段末句提到"the rest，as the cliché has it, is history"，意思是说以后的历史人人都知道了，这里并没有历史书的含义，更谈不上"ending at that time"了。
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