Have you ever seen a rainbow

Have you ever seen a rainbow(彩虹) in the sky? Do you know what it is?
A story says that when you see a rainbow you shoul d 31 at once to the place where it touches the ground, and 32 you would find a bag of gold. Of course, it is not 33 . You coul d not find the bag of gol d, nor coul d you ever find its end. No matter how 34 you run, it always seems far away.
A rainbow is not a thing which we can feel with our 35 as we can feel a fl ower. It is only the effect (效果) of light shining on raindrops（雨滴）. The raindrops catch the sunlight and break it up into all the wond erful col ors which we see.
It is 36 a rainbow perhaps because it is mad e up of raindrops and l ooks like a bow .
That is 37 we can never see a rainbow in a cl ear 38 . We see rainbows 39 when there is rain in the air and the sun is shining brightly through the clouds. Every rainbow has many col ors in the same ord er. The first of the top col or is always red, next 40 orange, then green, and last of all blue. A rainbow is ind eed one of the wond ers of nature.
31. A. run B. walk C. jump D. stand
32. A. where B. there C. here D. near
33. A. good B. wrong C. beautiful D. true
34. A. l ong B. short C. far D. difficult
35. A. hands B. l egs C. heads D. eyes
36. A. call ed B. spoken C. meant D. asked
37. A. because B. why C. so D. that
38. A. space B. sky C. fields D. water
39. A. hardly B. really C. only D. usually
40. A. goes B. sees C. covers D. comes
31—35 ABDCA 36—40 ABBCD
Language is always changing and developing. This isn’t a bad thing. If English hadn’t change d for a long time, we won’t have words to describe telephones, washing machines, computers or some other new things.
Language changes for several reasons. First, it changes because the needs of its speaker change. New technologies, new products, and new experiences need new words to express them clearly. Another reason for change is that different people have different language experiences. People use different sets of words and expressions, because they have different ages, jobs, education levels(水平) and so on.
How does language develop then? On the one hand, many of the languages changes begin with young people. When young people communicate with others of their own age, their language grows in grammar, words and expressions that are different from the older people’s. Some have a short lifetime but others can influence the language for long. On the other hand, we get new words in many different ways. We borrow them from other languages, we create them by making words shorter or combining words and we make them out of proper names.
Languages that don’t change over time are considered dead languages. The fact that
English ch anges so much shows that it is alive and well.
71. What does the writer think of the change and development of language?
He thinks it is.
72. Why do people use different sets of words and expressions according to the passage?
Because their and education levels are different.
73. How many reasons for language change are mentioned in this passage?
The writer mentions reasons.
74.How do young people help develop language?
They do it when they others of their own age.
75. What is considered a dead language according to the passage?
The one that over time is consid ered a dead language.
71. not a bad thing / not bad / a good thing / good 72. ages, jobs 73. two / 2
municate (talk) with 75. doesn’t change / never changes / keeps (stays) the same。