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是偶的阅读不好,还是前面的NN翻译得不正确? The Egyptians, however, did not discover leavened bread until about 3000 B.C. That discovery roughly coincided with the introduction of a wheat variety that was preferable to previous varieties because its edible kernel could be removed from the husk without first toasting the grain. (然而,到大约3k BC,E人才发现发酵的面包。这个发现大体上和一种新的小麦的引入是同时的,这种新的小麦比原来的品种更好,因为。。。) 我觉得本题的要求是:provides the strongest evidence that the two developments were causally related?(提供证据支持:这两个发展,也就是发酵面包的发现和小麦的引入是没有什么关联的)。 答案C:Heating a wheat kernel destroys its gluten, a protein that must be present in order for yeast to leaven bread dough. (为了。。。加热这个新品种的小麦的内核会破坏一种蛋白质,这个蛋白质是发酵所必须的) C很好地说明发酵的发现不是因为这个小品种小麦的引入。因而断桥。  |