pp2 第二套两道填空题

greets

The spy's repeated bungling was, above all else, ______ those who wished to thwart her efforts, since it was so unpredictable as to obscure any pattern that might otherwise lead to her capture.
A. an obstacle to
B. a signal to
C. a hindrance to
D. an indication for
E. a snare for
F. a boon
俺做这一题时看到bungling 直接选BD了。。。
为啥选 AC（答案高亮一下你就看见）， 最后that might otherwise lead to her caputre啥意思啊？

The detective's conviction that there were few inept crimes in her district led her to mpute some degree of ______ to every suspect she studied.
A.deceit
B.acumen
C.dulicity
D.shrewdness
E.evasiveness
F.equivocation
为啥选BD(答案高亮一下立刻出现），完全木有头绪啊这题

pp2第二套哪里有解析啊。。。阅读填空一大堆不懂啊 就要考试了 作文还没准备 咋办~~~

竹林中人

１．第一题看到ｐｒｅｄｉｃｔａｂｌｅ，我感觉就应该不会是ＢＤ了，应该是他们的反义词。that might otherwise lead to her caputre是说否则就会导致她被俘
２这个是不是跟前面的ｉｎｅｐｔ相反啊