下列动物种群中，不具有社群行为的是（ ）
A．蜜蜂群体
B．绵羊群体
C．白蚁群体
D．蚂蚁群体
动物营群体生活，绝不是同种的许多个体简单的聚集在一起，而是动物之间存在组织，具有明确的分工和森严的等级制度，还有靠的动物的活动、声音和气味等起到传递信息的作用称为动物语言．如在白蚁的群体中，包括雌蚁、雄蚁、工蚁和兵蚁，其中工蚁一般为群体中最小的个体，但数量最多，为没有生殖能力的雌性白蚁，工蚁的主要职责是建造和扩大巢穴、采集食物、伺喂幼蚁及蚁后等；兵蚁主要是保卫蚁穴；雌蚁的职能是产卵，雄蚁负责和雌蚁交配．另外蜜蜂和蚂蚁之间也存在着明确的分工，为社会行为，而在绵羊群体中尽管它们生活在一起，但彼此之间并没有什么分工和等级制度等．
故选：B
请认真阅读下列短文，并根据所读内容在文章后76~85表格中的空格里填入一个最恰当的单词。 注意：每个空格只填1个单词。请将答案写在答题卡上相应题号的横线上。 In the past, man did not have to think about the protection of his environment. There were not many people on earth, and natural resources seemed to be unlimited. Today, things are different. The world has become too crowded. We are using up our natural resources too quickly, and at the same time we are polluting our environment with dangerous chemicals. If we continue like this, human life on earth will not survive. Everyone realizes today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing methods, more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the land. Yet, we continue to use bigger and more powerful machines to cut down more and more trees. We realize that if rivers are polluted with waste products from factories, we will die in the end. However, in most countries waste products are still put into the sea, and there are few laws to stop this. We know, too, that if the population of the world continues to rise at the present rate, in a few years, there will not be enough food. What can we do to solve these problems? If we eat more vegetables and less meat, there will be more food available for everyone. Land that is used to grow crops can feed five times more people than land where animals are kept. The world population will not rise so quickly if people use modern methods of birth control. Finally, if we educate people to think about the problems, we shall have a better and cleaner planet in the future.
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