【题目】If you just spend time __________ advantages and disadvantages, you may get nothing in the end.
A.matching
B.balancing
C.observing
D.examining

【答案】B
【解析】 句意：如果你花费时间权衡利弊， 你最后什么也得不到。balance advantages and disadvantages 固定短语“权衡利弊”； match “与.....匹敌”；observe “观察”；examine “检查”。所以选B。