摘要: luck n. 好运 lucky adj. 幸运的 luckily adv. 幸运地

网址:http://m.1010jiajiao.com/timu_id_2229266[举报]

About ten men in every hundred have the trouble of colorblindness in some way. Women are luckier, only about five in every hundred are affected in this matter. Perhaps, after all, it is safer to be driven by a woman.

There are different shapes of color blindness. For example, a man may be able to see deep red. He may think that red, orange and yellow are all shades of green. Sometimes a person can not tell the difference between blue and green. Only a few unlucky men may see everything in shades of green-a strange world indeed.

Colour blindness in human beings is a strange thing to say clearly. In only one eye there are millions of very small things called “cones①”. These help us to see in a bright light and to tell difference between colours. There are also millions of “rods②”,but these are used for seeing when it is nearly dark. They show us shapes but no colours. Some insects have favourite colours. Mosquitoes③ like blue but do not like yellow. A red light will not attract insects, but a blue light will. Human beings also have favourite colours. Yet we are lucky. With the help of the cones in our eyes we can see many beautiful colours by day, and with the help of the rods we can see shapes at night. One day we may even learn more about the invisible④ colours around us.

生词注释:①cone n.锥形物 ②rods n.棒 ③mosquitoe n.蚊子 

     ④invisible adj.看不见的

1.“colour blindness”means       in Chinese.

       A.色盲                        B.颜料                    C.盲目                   D.瞎

2.Why do some people say it is safer to be driven by women?

       A.Women are better at driving than men.

       B.Women are more careful.

       C.There are fewer colour blind women.

       D.Women are friendly to people.

3.With the help of the “cones”, we can      .

       A.tell different shapes   B.kill insects

       C.see in a weak light     D.tell orange from yellow

4.We can attract and kill mosquitoes by using a       light.

       A.red                          B.yellow                 C.blue                    D.green

5.Which of the following sentences about the colour blindness is TRUE?

       A.None of them can see deep red.

       B.Not all of them have the same problem in recognizing(识别)colour.

       C.None of them can tell the difference between blue and green.

       D.All of them see everything in shades of green.

查看习题详情和答案>>

Dear Annie,

I have never written a letter to a newspaper before, I have just never felt the need to do such a thing. I have always felt I was quite able to do everything by myself. But now I know I was wrong.

Sometimes you really need help in life, I guess. And that’s why I’m writing this letter to you.

I have a happy family. I love my children and they love me . I’m a mother of three children. I know well how to bring up (带大)children, and two of them are already over twenty, so it is nothing new for me.

But now I have a serious problem:the Internet problem. My little son is just sixteen, and I feel he should do a lot of homework now , but he doesn’t seem to be interested in it . He can happily spend six or eight hours at a time on the Tnternet every day , He chats with pelple that he has never met before , but speaks little to us .He does lots of useless things on the Internet. And he sees red if you ask him to do his homework.

I just want him to be a good student . Now he seldomdoes his lessons at home. I’m afraid he will drop behind in his class soon. His father is a doctor , a very kind man . He never seems to be afraid of his father.

What can I do ?And don’t tell to talk to him. We’ve tried that and it didn’t work. But this is really a big problem in our family. I have tried everything I can think of . I

wonder how the Internet is so attractive(有吸引力的).You’re my last hope. Please tell me what I can do!

Yours,

Ellen Smith

 

(   ) 1. Mrs Snith wrote to Annie because       .

     A. she often asked others for help

     B. she thought she was a great mother

     C. she didn’t know how to stop his son surfing the Internet

     D. she didn’t know how the Internet was so attractive

(   ) 2.What might NOT Mrs Smith’s son do on the Internet?                        

     A. Send e-mails to his friends         B. Prepare for his lessons

     C. Chat with strange people           D.Read the news

(   ) 3. What does the phrase “he sees red”mean in this passage?                   

     A. He feels sorry                    B.He feels happy

     C. He becomes frightened             D. He becomes angry

(   ) 4. What do you think of Mr.Smith?                   

     A. An irresponsible(不负责任的)father who nerver taught his son

     B. A very excellent doctor who was busy with his work and had no time to teach

his son

     C. A very kind man who loved his son

     D.A man who always made his son be afraid of him but failed

 

 

查看习题详情和答案>>

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网