单选题 These sporadic attacks seem to indicate that the enemy is waging a war of ______ rather than attacking us directly.

【正确答案】 B
【答案解析】(attrition消耗)。句意为：这些断断续续的袭击似乎表明，敌人在打消耗战，而不是直接袭击我们。A．fragments碎片；C．intensity强烈；D．words词语。