第7题: [单项选择]When the author reflects on the "linked interdependence of attack and defense," he suggests that A. their origin preceded life. B. their development is precipitated by one another. C. their existence is dependent on human aggression. D. their escalation cannot be halted. 参考答案:B 答案解析:试题问当作者说到"linked interdependence of attack and defense"时,他想表示什么 A说“进攻与防御的相互依赖”关系早于生命起源。这显然不对,因为第三段中说在