GMATPREP一部分有可能是真题，随便问个语法

布瓜丫丫

有没有牛牛帮解释一下A为什么不行啊？

applec

"resulting from increasing" is not idiomatic. "As a result of" is idiomatic usage. the other answers also have idiomatic problem of using "result"

although "suffering from" is the best way of using "suffer", the using "because" as a conjunction after suffer does not violate the usage of "suffer".

tricky question, we need to pick the best among five, not always the "most correct" one from our mind.

田大饼

A：有三处错误。
1 possibly resultiing from increasing,作结果状语，因而可以指前句主语，就是 a study.因此造成逻辑错误。  
2 suffer from后面接名词，而不接动名词。 suffer from a decline of food supplies 就可以。
3，是由于温度的增加造成食物的减少，所以， an increase 要比increasing ,更体现出时间的先后以及结果。

B：正确。 be suffering是指正在经历不好的事，或者变糟了。 as a result of 纠正了A中 ing形式作状语回指主语的逻辑歧义，且用 a increase in 使得表达更准确。