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.
MARK. 本题的根本在于读懂题意。
第一句:Traces of cultivated emmer wheat have been found among...
说的是:我们在很多地方都发现了曾经种植EW的痕迹 (以前啊以前)
第二句:The only place where the wild form of emmer wheat has been found growing is...
(使用了has been found growing进行时说明现在仍是这样) 说的是:目前存活的只有出现在Asia某地
由此,一个比较牵强的逻辑链就形成了
因:虽然EW曾经在许多地方都种植过,但是目前留存的就在一个地方—Asia某地
果:EW最初是在Asia某地开始种植的
因此要strengthen这个逻辑链,就要排除他因,即(D)从那时到现在气候没有什么变化
关于(E):肯定是无关选项
1. 管你容不容易分辨,现在就是一锤定音了,我们发现的就是EW,改变不了什么吧?
2. 就算是承认现在分辨错了,那么现在仅存的植物就不是EW了,逻辑链崩了,要说也起码是weaken
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