Directions: There are 15 blanks in the following passage. For each blank there are four choices marked A), B), C), and D). Choose the ONE answer that best fits into the passage and write the corresponding letter on the Answer Sheet.
A major reason for conflict in the animal world is territory. The male animal 【A1】 _____ an area. The size of the area is sufficient to provide food for him, his 【A2】 _____ and their offspring. Migrating birds, for example, divide up the best territory in the order of “first come, first 【A3】 _____.” The late arrivals may acquire 【A4】 _____ territories, but less food is available, or they are too close to the 【A5】 _____ of the enemies of the species.
When there is conflict over territory, animals will commonly use force, or a 【A6】 _____ of force, to decide which will stay and which will go. It is interesting to note, however, that animals seem to use only the 【A7】 _____ amount of force necessary to drive away the intruder. There is usually no killing. In the 【A8】 _____ of those animals which are capable of doing each other harm, there is a 【A9】 _____ for the losing animal to show the winning animal that he wishes to submit. When he shows this, the 【A10】 _____ normally stops fighting. Animals (especially birds), which can easily escape from conflict seem to have no 【A11】 _____ against killing, and equally no mechanism for 【A12】 _____. The losing bird simply flies away. However, if two doves are 【A13】 _____ 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 【A14】 _____ of peace and, in its natural habitat, it is peaceful. But the “peace” mechanism does not 【A15】 _____ in a cage.
【答案解析】固定搭配题。 句意： 至于那些有能力互相伤害的动物们， 他们有自己的一套投降系统输了的动物可以向赢了的动物表明投降的意愿。 in the case of为固定搭配， 表示“至于， 在……情况下”。 因此B项正确。in the way妨碍， 挡道。 in the event of万一， 倘若。 in the manner of sb.以某人的风格。