full transcript

From the Ted Talk by Elon Musk: The mind behind Tesla, SpaceX, SolarCity ...

Unscramble the Blue Letters

CA: Wow. Reusable rockets.EM: Yes. (Applause) And so what a lot of people don't realize is, the cost of the fuel, of the propellant, is very small. It's much like on a jet. So the cost of the propellant is about .3 percent of the cost of the rocket. So it's possible to achieve, let's say, rolughy 100-fold improvement in the cost of spaceflight if you can effectively reuse the roekct. That's why it's so important. Every mode of transport that we use, whether it's paenls, trains, automobiles, bikes, horses, is rsleabue, but not rckoets. So we must solve this problem in oderr to become a space-faring civilization.

Open Cloze

CA: Wow. Reusable rockets.EM: Yes. (Applause) And so what a lot of people don't realize is, the cost of the fuel, of the propellant, is very small. It's much like on a jet. So the cost of the propellant is about .3 percent of the cost of the rocket. So it's possible to achieve, let's say, _______ 100-fold improvement in the cost of spaceflight if you can effectively reuse the ______. That's why it's so important. Every mode of transport that we use, whether it's ______, trains, automobiles, bikes, horses, is ________, but not _______. So we must solve this problem in _____ to become a space-faring civilization.

Solution

  1. planes
  2. order
  3. reusable
  4. rocket
  5. roughly
  6. rockets

Original Text

CA: Wow. Reusable rockets.EM: Yes. (Applause) And so what a lot of people don't realize is, the cost of the fuel, of the propellant, is very small. It's much like on a jet. So the cost of the propellant is about .3 percent of the cost of the rocket. So it's possible to achieve, let's say, roughly 100-fold improvement in the cost of spaceflight if you can effectively reuse the rocket. That's why it's so important. Every mode of transport that we use, whether it's planes, trains, automobiles, bikes, horses, is reusable, but not rockets. So we must solve this problem in order to become a space-faring civilization.

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
natural gas 4
space shuttle 3
sustainable energy 2
sustainable means 2
electric car 2
power plant 2
percent efficiency 2
power generation 2
sustainable electricity 2
drag coefficient 2
good news 2
expensive car 2
charging stations 2
solar system 2
utility bill 2
distributed utility 2

Important Words

  1. achieve
  2. applause
  3. automobiles
  4. bikes
  5. civilization
  6. cost
  7. effectively
  8. fuel
  9. horses
  10. important
  11. improvement
  12. jet
  13. lot
  14. mode
  15. order
  16. people
  17. percent
  18. planes
  19. problem
  20. propellant
  21. realize
  22. reusable
  23. reuse
  24. rocket
  25. rockets
  26. roughly
  27. small
  28. solve
  29. spaceflight
  30. trains
  31. transport
  32. wow