问题 实验题

根据下图表示,回答以下问题:(3分)

(1)可以运动的结构是               

(2)具有保护功能的是               

(3)该种生物,在生活条件不好时,可以抵御不良环境的结构是                 

答案

鞭毛  荚膜  芽孢

题目分析:细菌都是单细胞的个体,细菌的基本结构有细胞壁、细胞膜、细胞质和DNA集中的区域,该图中的荚膜具有保护的功能,鞭毛可以使细菌能够旋转运动,帮助细菌运动,鞭毛和荚膜是细菌特有的结构,芽孢是细菌遇到不良环境时可以形成芽孢来度过不良环境,有些细菌(多为杆菌)在一定条件下,细胞壁加厚,细胞质高度浓缩脱水所形成的一种抗逆性很强的球形或椭圆形的休眠体。

阅读理解

One day, there was a blind man called John sitting on the bench(长条椅)with a hat by his feet and a sign that read,“I am blind. Please help me.”

A creative publicist(广告员) named Tom was walking by the blind man and stopped to see that the man only had a few coins in his hat. He put a few of his own coins in the hat. Without asking for permission, he took the sign, turned it around and wrote a new message. Then he put the sign by the feet of the blind man, and left.

Later that afternoon the publicist returned to the blind man and noticed that his hat was almost full of bills and coins. The blind man recognized(认出,识别出)his footsteps and asked if it was he who had changed his sign. He also wanted to know what the man wrote on it.

The publicist said,“I just wrote the message a little differently.”He smiled and went on his way.

The new sign read,“Spring has come, but I can’t see anything.”

小题1:What’s the blind man’s name?

A.Tom.

B.John.

C.Tony.

D.Sorry, I don’t know.小题2:Who wrote a new message?

A.The blind man.

B.The teacher.

C.The publicist.

D.The farmer.小题3:How did the blind man recognize the publicist?

A.By his sign.

B.By his footsteps.

C.By his voice.

D.By his coins.小题4:When did the story happen?

A.In spring.

B.In summer.

C.In autumn.

D.In winter.小题5:What can we learn from the passage?

A.Publicists are always friendly and helpful.

B.We can get more money by changing a sign.

C.The blind man was very stupid, so he had little money.

D.The power(力量)of language is great.

多项选择题