问题 读图填空题

下图为草原生态系统简图,据图回答问题。

(1)在这个生态系统中,阳光、空气、水等属于____________因素。细菌、真菌在生态系统中扮演________角色。

(2)请写出图中陆地部分有捕食关系的食物链。

(3)为了防治害虫对禾谷类的危害,农民伯伯常喷洒农药。久而久之,昆虫的抗药性越来越强,原因是________________;经过检测,在鱼体内也发现了这种农药,这个事例可以说明__________。

(4)如果由于某种原因,导致鹰消失,禾谷类的数量将会发生怎样的变化?________。

答案

(1)非生物  分解者

(2)禾谷类→兔→鹰,禾谷类→昆虫→食虫鸟→鹰  

(3)农药对昆虫进行选择的结果(填“自然选择”也可以);鱼生活的水环境受到了污染,有毒物质沿着食物链传递

(4)先减少,后增多

阅读理解

Thid is a true story of a mother’s sacrifice(牺牲) in an earthquake.

When the rescuer reached the ruins of a young man’s house, they saw her dead body through the cracks. Her pose was somehow strange—she knelt(跪) on the ground like a person who was worshiping(祷告);her body was leaning forward, and her two hands were supported by an object. However, the cold and stiff body told them that she had passed away for sure.

The rescuers left this house and were going to search the next collapsed building. For some reason, the team leader was driven by a strong force to go back to the ruined house. Again, he knelt down to search the little space under the dead body. Suddenly, he screamed with excitement, “A child! There is a child1”

The whole team worked together; carefully they removed the piles of ruined objects around the dead woman. There was a 3-month-old little boy wrapped in a blanket under his mother’s dead body. Obviously, the woman had made great sacrifice in order to save her son. When her house was falling, she used her body to make a cover to protect her son. The little boy was still sleeping peacefully when the team leader picked him up.

A doctor came quickly to examine the little boy. After he opened the blanket, he saw a cellphone inside the blanket.There was a text massage on the screen. It said, “If you can survive, you must remember that I love you.” Everybody that read the massage cried

小题1:Why did the young woman kneel on the ground?

A.To protect herself from the earthquake

B.To show respect for God

C.To ask God for help

D.To protect her baby小题2:After reading the text massage, everyone felt quite ______.

A.shocked

B.excited

C.moved

D.afraid小题3:What’s the writer’s purpose in writing this passage?

A.To prove that a cat has nine lives.

B.To show the power of a mother’s love.

C.To express his thanks to the rescuers.

D.To give advice on how to rescue others.

单项选择题 A型题