Modern agricultural practices have been extremely successful in increasing the productivity of major food crops, yet despite heavy use of pesticides, ______ losses to diseases and pests are sustained each year.
(A) incongruous
(B) reasonable
(C) significant
(D) considerable
(E) equitable
(F) fortuitous
KEY: CD
关键字：yet、despite，表转折，反义前半句说杀虫剂功效显著，而后半句由yet与despite引导，表示与前半句相反的意思，那么应该是说杀虫剂的功效其实并不显著，尽管用了很多杀虫剂，最后的损失依旧“不小”，故选取(C)(D)选项。
词语解释：
[1]. (A) incongruous：(不连续的、不一致的)lacking congruity
[2]. (B) reasonable：(合理的)being in accordance with reason
[3].(C) significant：(可观的)of a noticeably or measurably large amount
[4].(D) considerable：(可观的)large in extent or degree
[5]. (E) equitable：(平等的)having or exhibiting equity
[6]. (F) fortuitous：(偶然的)occurring by chance
新gre填空更加注重实际运用语言能力的考察，减少了对单词纯意义的考察，所以备考新gre填空考试的考生可以根据以上gre官方指南对三空题型的解析进行备考。
