Traces of cultivated emmer wheat have been found among the earliest agricultural remains of many archaeological sites in Europe and Asia. The only place where the wild form of emmer wheat has been found growing is a relatively narrow strip of southwest Asia. Since the oldest remains of cultivated emmer wheat yet found are from village sites in the same narrow strip, it is clear that emmer wheat was first domesticated somewhere in that strip.
Which of the following, if true, most strengthens the argument?
The present-day distribution of another wild wheat, einkorn, which was also domesticated early in the development of agriculture, covers a much larger area of southwest Asia.
Modern experiments show that wild emmer wheat can easily be domesticated so as to yield nearly as well as traditionally domestic strains.
At the time when emmer wheat was first cultivated, it was the most nutritious of all the varieties of grain that were then cultivated.
In the region containing the strip where wild emmer wheat has been found, climatic conditions have changed very little since before the development of agriculture.
It is very difficult, without genetic testing, to differentiate the wild form of emmer wheat from a closely related wild wheat that also grows in southwest Asia.
前提:野生小麦到现在为止一直在X地,最早的人工小麦遗迹也在X地;
结论:野生小麦是在X地被首次转化为人工小麦;
如果要确保结论成立,就要确保人工小麦首次出现的时间节点里野生小麦同时存在。D项气候如果有重大变化,导致漫长的历史中可能有一个野生小麦不适宜存在的空白时间,如果恰好在这个时间段里人工小麦首次出现,说明它不是在X地转化来的,而可能是在Y地首次转化,而传播到X地。以此削弱结论。
这么解释有点复杂,但也只能这样了,考试应该会直接放弃……
看懂惹,感谢!
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