琦叔七套 Section 5里的题求讨论，求分析

希望中的玫瑰UID: 2909568

感觉下面两题的关键解题点都在转折词逻辑的分析上。自己在这块较弱，所以求大神们来分析解答。

13. Modern agricultural practices have been extremely successful in increasing the productivity of major food crops, yet despite heavy use of pestisides, ____ losses to diseases and insects pests are sustained each year.

A. incongruous
B. reasonal
C. significant
D. considerable
E. equitable
F. fortuitous

8. An investigation that is ____ can occasionally yield new facts, even notable ones, but typically the appearance of such facts is the result of a search in a definite direction.

A. timely
B. unguided
C. consistent
D. uncomplicated
E. subjective

求大神Robin 现身解答~

mhxshinUID: 3403012

13，yet despite……表示尽管如此==》所以后半句应是前半句的反义==》losses已表达相反的意思==》空格里的词应加强losses==》C/D
尽管使用了如此多的杀虫剂，还是产生了重大的损失。

8,  but，表示转折==》后半句说这类事实的出现一般是在有明确引导的调查下产生的==》所以前面的意思是，_____的调查也依然可以大量产出事实，甚至还更牛逼==》没有明确引导的调查==》填一个类似，自动、非刻意等意思的词==》B，无引导的

希望中的玫瑰UID: 2909568

mhxshin 发表于 2013-4-5 16:30
13，yet despite……表示尽管如此==》所以后半句应是前半句的反义==》losses已表达相反的意思==》空格里的词 ...

谢谢LZ的解答，这种句子关键就在于对转折意思的把握。