2. 外语
  3. A major reason for 【21】______ in the animal world is territory. The male animal establishes an area. The size of the area is suf

A major reason for 【21】______ in the animal world is territory. The male animal establishes an area. The size of the area is suf

admin2010-06-30  3
问题    A major reason for 【21】______ in the animal world is territory. The male animal establishes an area. The size of the area is sufficient to provide food for him, his 【22】______ and their offspring. Migrating birds, for example, 【23】______ up the best territory in the order of "first come, first 【24】______ . "The late arrivals may acquire larger territories, but less food is 【25】______ , or they are too close to the 【26】______ of the enemies of the species. 【27】______ there is really insufficient food or the danger is very great, the animal will not mate. In this way, the members of the species which are less fit will not have 【28】______ .
   When there is conflict 【29】______ territory, animals will commonly use force, or 【30】______ of force, to decide who will stay and who will go. It is interesting to note, however, that animals seem to use the 【31】______ amount of force necessary to drive away the 【32】______ There is usually no killing. In the case of those animals which are 【33】______ of doing each other great harm, (here is a system for the 【34】______ animal to show the winning animal that he wishes 【35】______ When he shows this, the 【36】______ normally stops fighting. Animals especially birds, which can easily escape from conflict seem to have no obstacle against killing, equally no mechanism 【37】______ sub mission. The defeated bird simply flies away. However, if two doves are 【38】______ 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 【39】______ of peace and, in its natural habitat, it is peaceful. But the" peace" mechanism does not 【40】______ in a cage.
【23】
选项 A、break
B、divide
C、speak
D、make
答案B
解析 该题是对词组的考察，divide up意为“分割”，该句意为：例如，候鸟根据先到先招待；先到先供应的原则来分割最好的领地。其他选项都与文章的意思不符。
转载请注明原文地址:https://kaotiyun.com/show/RkJd777K
本试题收录于： 公共英语四级笔试题库公共英语（PETS）分类
0

公共英语四级笔试

公共英语（PETS）

相关试题推荐
随机试题
最新回复(0)