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.
D项从正面和反面都可以感受到增强结论,虽然力度不大,但是比起其他选项已经是在增强了,而且原文的premise是用现在完成时,表达的野生小麦在这个地方一直都有生长。
正面考虑:因为该地的天气一直没有变过,野生小麦一开始就在这里生长,那就说明该地天气适合小麦生长,从而减少了小麦去到其他不一样天气的地方生长的可能性;
反面考虑:取非:该地天气变化非常大,此时再放结论:第一次小麦的人工种植也在同一个地方,显得结论可信力度下降了,而且也是对premise(野生小麦到现在为止都还在那个地方生长)的一个质疑
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