问题 选择题

下列描述中,哪项与社会行为无关(  )

A.群体生活有利于维持种族的生存

B.不同成员分工合作共同维持群体生活

C.群体的不同成员之间有信息交流

D.同种生物的许多个体简单聚集在一起

答案

营社会行为的动物并不是同种生物的许多个体简单聚集在一起,动物社会行为的特点,群体内部往往形成一定组织;成员之间有明确分工;有的高等动物还形成等级.如白蚁有蚁后:生殖器官发达,主要职责是产卵、繁殖后代和统管这个群体大家庭. 雄蚁:有发达的生殖器官和外生殖器,主要职能是与蚁后交配. 工蚁:无翅,一般为群体中最小的个体,但数量最多.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:头大,上颚发达,可以粉碎坚硬食物,在保卫群体时即成为战斗的武器. 白蚁的社会行为就是群居,互相分工,通过信息交流更好的合作,抵挡外敌.蚂蚁的个体很弱小,难以独立生存.但是如果一群蚂蚁在一起,就会变得很强大.因此社会行为可以更好地适应环境,有利于个体和种族的生存.

故选:D.

听力题

请认真阅读下面短文,并根据各题所给首字母的提示,写出一个合适的英语单词完整、正确的形式,使短文通顺。

There are four people in my family. Every day my parents are very busy trying to make 小题1: m  ▲   in order to pay the high tuition (学费) for my brother and me. They hardly say “I love you” or send flowers to each other. Besides, my father has a bad temper (脾气). It is 小题2:e  ▲   for him to lose his temper 小题3:w  ▲   he’s very tired from the hard work. I didn’t know whether there was love between them until one spring. At that time, my father 小题4:s  ▲   got badly sick. My mother had to stay with him in the小题5:h  ▲   for a month. When they returned from the hospital, they both looked very weak as if both of them had a serious illness.

After they were back, my mother helped my father小题6:w  ▲   slowly on the country road every day in the morning and dusk. 小题7:H  ▲   , after two months my father still couldn’t walk by 小题8:h  ▲   . All of us were worried about him.

  ”Dad, how are you feeling now?” I asked him one day.

“Susan, don’t小题9:w  ▲   about me.” he said in a low voice. “I just like walking with your mom. I like this kind of life.” Reading his eyes, I know he loves my mother very much.

Once I thought love meant小题10:f  ▲   , presents and sweet kisses. But from this experience, I understand that love is inside, making life strong and warm.

多项选择题