问题 选择题

同学们对动物的先天性行为和学习行为提出了自己的认识,其中正确的是:

A.动物越高等,学习行为就越复杂,在所有行为中所占比例也越大

B.先天性行为和学习行为都是由遗传物质控制的

C.无脊椎动物比较低等,它们没有学习行为

D.动物界中,只有哺乳动物才有学习行为

答案

答案:A

题目分析:A.动物的先天性行为是一些简单的、出生时就必不可少的行为,学习行为则是动物不断适应多变环境得以更好地生存和繁衍的重要保证,不同动物的学习能力是有差别的:动物越低等,学习能力也就越差,动物越高等,学习行为就越复杂,在所有行为中所占比例也越大,故符合题意;

B.动物的先天性行为是由体内的遗传物质控制的,学习行为是通过环境因素的作用,由生活经验和学习获得的,故不符合题意;

C.如果一种生物一生只具备先天性行为而没有学习行为,这种生物就会因找不到食物或不能逃避敌害等而被大自然淘汰,研究发现,就连动物界最低等的原生动物草履虫,也是有学习能力的,故不符合题意;

D.不同动物都具有学习能力,但学习能力是有差别的,动物越低等,学习能力也就越差,例如走迷宫的蚯蚓要经过200次以上的尝试和错误后,才能学会直接爬向潮湿的暗室,而走复杂迷宫的老鼠学习就快得多,因此并不是只有哺乳动物才有学习行为,故不符合题意;

故选A。

阅读理解

  Fifteen people were killed and 38 others injured in a road accident early Wednesday morning in Ens hi, Central China’s Hu bei Province.

The bus, travelling from Wanzhou in Southwest China’s Chongqing Municipality to  Shen zhen in South China’s Guangdong Province, had 53 passengers on board,three more than permitted.

At around 1 am on Wednesday, the bus increased speed gradually on a curve(弯路)and plunged(往前冲) more than 30 metres into a valley below. Thirteen people, including one of the two drivers, died at once. Two others died on the way to hospital.

Although the cause of the accident is still unclear, the local police said the driver paid no attention to the official warning signs on the expressway(高速公路).

It hit a section which had been closed as a result of snow.

Because of the cold weather and icy roads,the expressway had been closed by police since Tuesday morning. But the bus drivers took the dangerous route, paying no attention to the warnings.

The rescue team, which included more than 30 medical workers and 120 local villagers,joined together and rushed to the scene at the news of the accident. By 5 am, all of the injured had been sent to three local hospitals for emergency treatment. A hospital source said most of the patients were in a stable(稳定的)condition but a few were still in danger.

According to a 2009 national public opinion poll, traffic accidents ranked as people’s third biggest security(安全) concern.

小题1: When the accident took place,____.

A.the bus was on the way to Shenzhen

B.most of the passengers were sound asleep

C.all the passengers were given immediate rescue

D.it was snowing hard小题2: The expressway was closed to ____.

A.protect the passengers from being frozen

B.make the police have a good rest

C.stop cars traveling around

D.avoid(避免) the happening of traffic accidents小题3: What the local villagers did showed that they were ____.

A.curious(好奇的)

B.warm hearted

C.frightened

D.simple minded

单项选择题