请教一到题

luyinan

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?

 

(A) 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.

(B) Modern experiments show that wild emmer wheat can easily be domesticated so as to yield nearly as well as traditionally domestic strains.

(C) At the time when emmer wheat was first cultivated, it was the most nutritious of all the varieties of grain that were then cultivated.

(D) 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.

(E) 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.

请问为什么选D 啊   不明白 谢谢

bjleo

排除法? 其它都不对

luyinan

请高手说具体点好吗

rnir

现存最早的种植麦子的遗迹和现存唯一的野生麦子发现在同一地带，所以最早种植麦子的地方就在这里。
要加强从两方面下手，一是这种野生麦子的分布从古至今没有变化，二是有没有其它相似物种已成定论的可以佐证。
A，相似物种但分布太广泛根本不能确定在哪开始种植的，不能加强
B，什么麦子可以被种植的，还用你说，无关
C，无关
D，在包括野麦子生长地带的比较大的区域气候没什么变化，说明这一片只有这里张这种麦子，所以这里是这种麦子种植发源地的可能性提高了，虽然还是比较牵强不过从10%到20%也是加强
E，离谱

综上D是最好的，选D

luyinan

谢谢