A major reason for conflict in the animal world is territory. The male animal 【A1】______ an area. The size of the area is 【A2】______ to provide food for him, his 【A3】______ and their offspring. Migrating birds, for example, divide up the best territory in the order of “first come, first 【A4】______ ” The late arrivals may acquire 【A5】______ territories, but less food is available, or they are too close to the【A6】______ of the enemies of the species.
When there is【A7】______ over territory, animals will commonly use force, or a【A8】______ of force, to decide which will stay and which will go. It is interesting to note, 【A9】______ that animals seem to use only the 【A10】______ amount of force necessary to drive away the intruder. There is usually no killing. In the 【A11】______ of those animals which are capable of doing each other harm, there is a 【A12】______ for the losing animal to show the winning animal that he wishes to submit. When he shows this, the【A13】______ normally stops fighting. Animals (especially birds), which can【A14】______ escape from conflict seem to have no【A15】______ against killing, and equally no mechanism for 【A16】______. The losing bird simply flies away. However, if two doves are【A17】______ in a cage, and they start fighting, they will continue to fight until one kills the other. We all think of the dove as a 【A18】______ of peace and, 【A19】______ its natural habitat, it is peaceful. But the “peace” mechanism does not 【A20】______ in a cage.
【答案解析】文中提到对于动物而言, 解决领地冲突的方式除了诉诸武力以外, 还有另外一种与力量相关却有所区别的方式。 a show of force表示“展示力量”。 a practice of force等同于诉诸武力, 与前文语义重复。 a proof of force表示“力量的证明”。 a comparison of force表示“力量的比较”, 均不符合题意。
【答案解析】联系前一句“There is usually no killing”, 可知下一句的作用应当是进一步证明这一论据, 例如提供一个更为具体的示例或情况。 in the case of表示“在……的情况下”, in the way of表示“在……方面”。 in the event of 表示“如果; 万一”。 in the manner of表示“以……的方式”。 只有B选项最符合题意。
单选题
【A12】______
【正确答案】
A
【答案解析】阅读原文可知, “for the losing animal to show the winning animal that he wishes to submit. When he shows this, the… normally stops fighting.”这两句话是对需要填入的单词做进一步解释说明。 system表示“(工作, 组织或处理) 方式; 机制”, 对应文章中所提及的在决斗中为了避免伤亡, 输了的一方向另外一方认输求饶的方式。