问题 探究题

在甲、乙、丙、丁四个培养皿中分别放等量的棉花,再将相同数量(各100粒)的绿豆种子放在上面,在不同条件下进行培养。数日后记录种子萌发情况如下表。

(1)根据本实验,可得出的结论是:种子萌发需要_________。

(2)种子萌发后,如果继续培养几周,幼苗生长较好的应该是_________组。

(3)要证明“光照对种子萌发是否有影响”,在实验设计上可选用_________作对比。

(4)丙组中有7粒种子没有萌发,请你给一个合理的解释。__________________。

答案

(1)水分

(2)甲

(3)甲和丙

(4)胚不完整或已死亡

阅读理解

Once upon a time, there was an island where all the feelings lived: Happiness, Sadness, Knowledge, and all of the others, including Love. One day the feelings were told that the island would sink, so all built boats and left, except Love. Love was the only one who stayed. Love wanted to hold out(坚持) until the last possible moment.

When the island had almost sunk, Love decided to ask for help.

Richness was passing by Love in a big boat. Love said, “Richness, can you take me with you?”

Richness answered, “No, I can’t. There is a lot of gold and silver in my boat. There is no place here for you.”

Love decided to ask Vanity(虚荣心) who was also passing by in a beautiful ship.“Vanity, please help me!”

“I can’t help you, Love. You are all wet and might damage(破坏) my boat, “Vanity answered.

Sadness was close by so Love asked, “Sadness, let me go with you.”

“Oh…Love, I am so sad that I need to be by myself!”

Happiness passed by Love, too, but she was so happy that she did not even hear when Love called her.

Suddenly, there was a voice, “Come, Love, I will take you.”It was an elder. So thankful and happy, Love even forgot to ask the elder where they were going. When they arrived at dry land, the elder went her own way. Realizing how much was owed(欠) the elder, Love asked Knowledge, another elder, “Who helped me?”

“It was Time, “Knowledge answered.

“Time?”asked Love.“But why did Time help me?”

Knowledge smiled with deep wisdom(智慧) and answered, “Because only Time is able to understand how valuable(珍贵的)Love is.”

小题1:How did the feelings go away from the island?

A.By water.

B.By swimming.

C.On foot.

D.By flying小题2:How many feelings did Love ask for help but failed?

A.2.

B.3

C.4

D.5小题3:Which of the following is true?

A.Happiness was blind.

B.Richness had a small boat.

C.Vanity’s ship was damaged.

D.Sadness wanted to stay alone.小题4:Who saved Love?

A.Time.

B.Knowledge.

C.Richness.

D.Happiness.小题5:Which of the following might be the best title of the passage?

A.Love and Time

B.An Accident

C.A sinking island

D.Different Feelings

单项选择题