问题 填空题

含羞草被触碰后叶合拢,这说明生物具有______.生物表现为多样性的同时也具有共性,其中生物最基本的特征是______.

答案

生物在表现为多样性的同时也具有共性:新陈代谢是生物最基本的特征,在此基础上生物才有生长、繁殖和应激性等生命特征.应激性是指生物在遇到外界刺激时能够作出的规律性反应.应激性是生物具有的普遍特性,它能够使生物“趋利避害”.如含羞草被触碰后叶合拢.新陈代谢能够不断从外界摄取营养物质,同时不断排出体内产生的废物(如汗液、尿液、二氧化碳等).

故答案为:应激性;新陈代谢.

选择题
阅读理解

阅读理解。

     There are popular programs about the work of the police on TV. People like them because they are

interesting and useful.

     In London there is a TV program called "Police Five." It takes five minutes a week. A TV reporter

talks about crimes in London. He asks people for help, because the police station needs their help.

     The TV reporter shows pictures of lost painting, lost cars and other lost things during the week.

Sometimes he shows the picture of the car that the thieves drove away. When people see the pictures

of such things on TV, they may remember something so that they may tell the police where or when

they saw them. With their help the police may catch more thieves.

     Sometimes the police find a car or something expensive that has ever been lost, the TV reporter

shows them on TV. Then the owners may see them and they can get them back.

1. "Police Five" is _____.

A. a name of a TV reporter

B. time of a TV program

C. the name of a TV program

D. a police station

2. "Police Five" is shown _____.

A. every day

B. every week

C. five minutes every day

D. five times a week

3. This program is about _____.

A. a TV reporter

B. painting

C. cars

D. crimes

4. The police _____ by this program.

A. let people understand them

B. ask for people's help

C. let people know what was lost

D. let people feel interested

5. When a lost thing is found, the police will _____ by this way.

A. tell the TV station

B. caught the thief

C. find the owner

D. be shown on TV