full transcript

## Unscramble the Blue Letters

So what I did actually is to sduty this problem, and I found something quite ssrpiurnig. That one can mruesae roughness by a number, a number, 2.3, 1.2 and sometimes much more. One day, a friend of mine, to bug me, brought a pcriute and said, "What is the roughness of this curve?" I said, "Well, just short of 1.5." It was 1.48. Now, it didn't take me any time. I've been looking at these things for so long. So these numbers are the numbers which denote the roughness of these surfaces. I hasten to say that these surfaces are completely artificial. They were done on a computer, and the only input is a number, and that number is roughness. So on the left, I took the roughness copied from many landscapes. To the right, I took a higher renhuosgs. So the eye, after a while, can distinguish these two very well.

## Open Cloze

So what I did actually is to _____ this problem, and I found something quite __________. That one can _______ roughness by a number, a number, 2.3, 1.2 and sometimes much more. One day, a friend of mine, to bug me, brought a _______ and said, "What is the roughness of this curve?" I said, "Well, just short of 1.5." It was 1.48. Now, it didn't take me any time. I've been looking at these things for so long. So these numbers are the numbers which denote the roughness of these surfaces. I hasten to say that these surfaces are completely artificial. They were done on a computer, and the only input is a number, and that number is roughness. So on the left, I took the roughness copied from many landscapes. To the right, I took a higher _________. So the eye, after a while, can distinguish these two very well.

1. surprising
2. roughness
3. picture
4. measure
5. study

## Original Text

So what I did actually is to study this problem, and I found something quite surprising. That one can measure roughness by a number, a number, 2.3, 1.2 and sometimes much more. One day, a friend of mine, to bug me, brought a picture and said, "What is the roughness of this curve?" I said, "Well, just short of 1.5." It was 1.48. Now, it didn't take me any time. I've been looking at these things for so long. So these numbers are the numbers which denote the roughness of these surfaces. I hasten to say that these surfaces are completely artificial. They were done on a computer, and the only input is a number, and that number is roughness. So on the left, I took the roughness copied from many landscapes. To the right, I took a higher roughness. So the eye, after a while, can distinguish these two very well.

## Frequently Occurring Word Combinations

### ngrams of length 2

collocation frequency
long time 4
man named 3
real price 3
simple rule 2
mathematics coming 2
price increments 2

### ngrams of length 3

collocation frequency
real price increments 2

## Important Words

1. artificial
2. brought
3. bug
4. completely
5. computer
6. copied
7. curve
8. day
9. denote
10. distinguish
11. eye
12. friend
13. hasten
14. higher
15. input
16. landscapes
17. left
18. long
19. measure
20. number
21. numbers
22. picture
23. problem
24. roughness
25. short
26. study
27. surfaces
28. surprising
29. time