[求助]弱问OG一题，望牛人回答！！

我的水平很有限啊，这个题搞了半天也没明白，和同学讨论，结果我们都绕进去了，唉！我们都非牛人，只能上来问问了！OG P51页第10题！



划线的句子是这个！

The extreme seriousness of desertification results from the vast areas of land and the tremendous numbers of people affected, as well as from the great difficulty of reversing or even slowing the process.

10. Which of the sentences below best expresses the essential information in the highlighted sentence   in the passage?

A. Desertification is a significant problem because it is so hard to reverse and affects large areas of land and great    
    numbers of people.
B. Slowing down the process of desertification is difficult because of population growth that has spread over large  
    areas of land.
C. The spread of desert is considerable a very serious problem that can be solved only if large numbers of people in  
    various countries are involved in the efforts.
D. Desertification is extremely hard to reverse unless the population is reduced in the vast areas affected.

答案给的是选A，可是我有些不明白啊，哪位牛人能给解释解释呢？？先谢了！！

原句的意思是沙漠化的影响严重是由于1.影响地区广大，2，影响了大量人口，3，沙漠化的过程是难以逆转甚至是减缓的

A选项exactly the same

B选项Slowing down the process of desertification is difficult because of population growth that has spread over large areas of land.

减缓沙漠化程度是困难的因为人口增长已经影响了很大的区域……（不会说中文了，不好意思）

C选项The spread of desert is considerable a very serious problem that can be solved only if large numbers of people in various countries are involved in the efforts.

沙漠的扩大是一个很严重的问题，因为需要各个地方的大量人口一起行动才能解决这个问题。

D选项Desertification is extremely hard to reverse unless the population is reduced in the vast areas affected
沙漠化很难逆转，因为只有受影响地区的人口下降才能解决这个问题。

所以后三个选项都扭曲原文的意思了。故选A

写完意识到我的case翻译很成问题……