【题目】If you don't know what their shortcoming are, your chances of overcoming them are very ______.
A.slim
B.brief
C.distant
D.obvious

【答案】A
【解析】考查形容词辨析。A.slim苗条的，微小的；B. brief 简洁的；C. distant遥远的；D. obvious 显然的；句意：如果你不知道他们的缺点是什么，你克服他们的机会就是很小，根据句意可知选A项。