full transcript

## Unscramble the Blue Letters

This process requires extraordinary precautions. The stieisncts must insure that the ice is not contaminated. Moreover, in this 8,000-mile journey, they have to insure this ice doesn't melt. Imagine jugnilgg a snowball across the tropics. They have to, in fact, make sure this ice never gets warmer than about 20 degrees below zero, otherwise, the key gases inside it will dissipate. So, in the coldest place on Earth, they work inside a rerroiefagtr. As they handle the ice, in fact, they keep an extra pair of gloves wraimng in an oven, so that, when their work gloves fereze and their frgines stiffen, they can don a fserh pair. They work against the clock and against the thermometer.

## Open Cloze

This process requires extraordinary precautions. The __________ must insure that the ice is not contaminated. Moreover, in this 8,000-mile journey, they have to insure this ice doesn't melt. Imagine ________ a snowball across the tropics. They have to, in fact, make sure this ice never gets warmer than about 20 degrees below zero, otherwise, the key gases inside it will dissipate. So, in the coldest place on Earth, they work inside a ____________. As they handle the ice, in fact, they keep an extra pair of gloves _______ in an oven, so that, when their work gloves ______ and their _______ stiffen, they can don a _____ pair. They work against the clock and against the thermometer.

## Solution

1. scientists
2. juggling
3. freeze
4. refrigerator
5. fresh
6. fingers
7. warming

## Original Text

This process requires extraordinary precautions. The scientists must insure that the ice is not contaminated. Moreover, in this 8,000-mile journey, they have to insure this ice doesn't melt. Imagine juggling a snowball across the tropics. They have to, in fact, make sure this ice never gets warmer than about 20 degrees below zero, otherwise, the key gases inside it will dissipate. So, in the coldest place on Earth, they work inside a refrigerator. As they handle the ice, in fact, they keep an extra pair of gloves warming in an oven, so that, when their work gloves freeze and their fingers stiffen, they can don a fresh pair. They work against the clock and against the thermometer.

## Frequently Occurring Word Combinations

### ngrams of length 2

collocation frequency
greenhouse gases 5
climate change 3
early explorers 2
trace chemicals 2
united states 2

## Important Words

1. clock
2. coldest
3. contaminated
4. degrees
5. dissipate
6. don
7. earth
8. extra
9. extraordinary
10. fact
11. fingers
12. freeze
13. fresh
14. gases
15. gloves
16. handle
17. ice
18. imagine
19. insure
20. journey
21. juggling
22. key
23. melt
24. oven
25. pair
26. place
27. precautions
28. process
29. refrigerator
30. requires
31. scientists
32. snowball
33. stiffen
34. thermometer
35. tropics
36. warmer
37. warming
38. work