问题 探究题

在大白菜、卷心菜、小白菜的叶上,常能看到一些深绿色的菜青虫,它是粉蝶的幼虫,长大后先变为蛹后羽化为菜蝶。大白菜、卷心菜、小白菜、萝卜、油菜等植物的花,每一朵都由4片花瓣组成,十字形,这些植物都属于十字花科。菜青虫是危害十字花科的重要害虫。这一行为是先天性行为吗?请根据上述材料,回答问题。

(1)你作出的假设是____________________________。

(2)你制定实验计划时,首先要考虑选用的菜青虫是成虫、幼虫还是即将孵化的菜青虫卵进行隔离饲养?应选___________。原因是:______________________________________________。

(3)准备材料:甲组是将某种十字花科植物的叶分别榨取汁液抹在滤纸上,作为________组;乙组则将非十字花科植物的叶榨取汁液也涂抹在大小与甲相同的另一张滤纸上,作为_________组。

(4)将饥饿2天的10只菜青虫放在滤纸周围,观察菜青虫爬向哪块滤纸的数量较多。实验中,要将菜青虫进行饥饿处理的目的是______________________________。

(5)实验结果:菜青虫将更多地爬向_______组。

(6)实验结论:_______________________________________________。

答案

(1)菜青虫吃十字花科植物的叶是先天性行为(或菜青虫吃十字花科植物的叶不是先天性行为)

(2)将孵化的菜青虫卵 原因是从卵开始进行隔离饲养,才可能说明观察或检验菜青虫的某些行为究竟是本能,还是后天习得的行为,使探究具有可信度

(3)实验 对照

(4)使菜青虫有较高食欲

(5)甲

(6)菜青虫总是取食十字花科植物,这一行为是先天性行为

阅读理解

阅读理解。

     The poor are very wonderful people. One evening we went out and we picked up four people

from the street. And one of them was in a most terrible condition-and I told the sisters: You take

care of the other three. I take care of this one who looked worse. So I did for her all that my love

can do. I put her in bed, and there was such a beautiful smile on her face. She took hold of my hand

as she said just the words "Thank you" and she died.

      I could not help but examine my conscience before her and I asked what I would say if I was

in her place. And my answer was very simple. I would have tried to draw a little attention to myself.

I would have said I am hungry, I am dying, I am cold, I am in pain, or something, but she gave me

much more-she gave me her grateful love. And she died with a smile on her face. So did that man

whom we picked up from the drain, half eaten with worms, and we brought him to the home. "I have

lived like an animal in the street, but I am going to die like an angel, loved and cared for," he said at

the end. And it was so wonderful to see the greatness of that man who could speak like that, who

could die like that without blaming anybody, without cursing anybody, without comparing anything.

Like an angel-this is the greatness of our people. And that is why we believe what Jesus has said: I

was hungry, I was naked, I was homeless, I was unwanted, unloved, uncared for, and you did it to

     And with this prize that I received as a Prize of Peace, I am going to try to make the home for

many people who have no home. Because I believe that love begins at home and if we can create

a home for the poor I think that more and more love will spread. And we will be able through this

understanding love to bring peace, the good news to the poor, the poor in our own family first, in

our country and in the world. When I pick up a person from the street, hungry and I give him a plate

of rice or a piece of bread, I am satisfied. I have removed that hunger. But to a person who is shut

out, who feels unwanted, unloved, terrified, who has been thrown out from society, that poverty is so

full of hurt and so unbearable... And so let us always meet each other with a smile, for the smile is the

beginning of love, and once we begin to love each other naturally we want to do something.

1. What can be learned from the second paragraph?

A. The woman should have paid more attention to herself.

B. The man couldn't blame anyone.

C. The author is religious.

D. The man died in the street.

2. The purpose of this passage is ________. 

A. to appeal for more donation for the poor

B. to call on the public to love each other

C. to tell the readers the poor are wonderful

D. to express how moved the author is to receive the prize

3. Which of the following can NOT be inferred from the passage?  

A. The author has few supporters.

B. The author was somewhat surprised at what the man said.

C. The author is delighted to help others in trouble.

D. The author may agree to solve social problems in soft ways.

4. What's the best title of this passage? 

A. Have Sympathy for the Poor

B. The Poor Are Wonderful

C. Smile and Love

D. Relieve Poverty

单项选择题