Textbooks say that the Chinese should increase purchases of American products when the renminbi's value increases against the dollar -- and indeed they did by $28.4 billion. But exports to China were already increasing rapidly before the currency began to appreciate, rising by $19 billion between 2002 and 2005, according to the Census Bureau.
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Textbooks say Archaeopteryx, which lived some 150 million years ago, was the first bird.
教科书上的始祖鸟插图，它是首次出现的鸟类，生活在1.5亿年前。
Over the past few years, in fact, scientists have been finding life in all sorts of places where biology textbooks say it shouldn't exist.
事实上，在过去的几年中科学家一直都在发现生物学课本上认为不可能存在生命的地方有各种各样的生命存在。
Well,some textbooks would say no.
有些教科书会说，不算。
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