full transcript

## Open Cloze

Professor Fukanō, the famous eccentric scientist and adventurer, has ________ on a new challenge: flying around the _____ nonstop in a plane of his own design. Able to travel ____________ at the incredible speed of one degree longitude around the _______ per minute, the plane would take six hours to circle the world. There's just one problem: the plane can only hold 180 kiloliters of fuel, only enough for exactly half the _______. Let's be ______. The professor probably could have designed the plane to hold more fuel, but where's the fun in that? Instead, he's devised a slightly more _________ solution: building three identical planes for the mission. In addition to their speed, the professor's ________ them with a few other incredible features. Each of the planes can turn on a dime and instantly transfer any amount of its fuel to any of the others in midair without _______ down, provided they're next to each other. The professor will pilot the first plane, while his two assistants Fugōri and Orokana will pilot each of the others. However, only one airport, located on the equator, has _______ __________ for the __________, making it the starting point, the finish line, and the only spot where the planes can land, takeoff, or refuel on the ______. How should the three planes coordinate so the professor can fly ____________ for the whole trip and achieve his dream without anyone _______ out of fuel and crashing? Pause here if you want to figure it out for yourself. Answer in: 3 ______ in: 2 Answer in: 1 According to the professor's calculations, they should be able to pull it off by a hair. The key is to maximize the support each assistant provides, not wasting a single kiloliter of fuel. It also helps us to think symmetrically so they can make shorter trips in either direction while setting the professor up for a long unsupported stretch in the ______. Here's his solution. All three planes take off at noon flying west, each fully loaded with 180 kiloliters. After 45 minutes, or one-eighth of the way around, each _____ has 135 kiloliters left. Orokana gives 45 to the professor and 45 to Fugōri, fully _________ them both. With her remaining 45, Orokana returns to the airport and heads to the lounge for a well-deserved _____. 45 minutes later, with one-quarter of the trip complete, the professor and ______ are both at 135 __________ again. Fugōri transfers 45 into the professor's tank, leaving himself with the 90 he needs to return. _________ Fukanō stretches and puts on his favorite album. He'll be alone for a while. In the meantime, Orokana has been _________ awaiting Fugōri's return, her plane fully refueled and ready to go. As soon as his plane touches the ground, she _____ off, this time flying east. At this point, exactly 180 minutes have ______ and the professor is at the halfway point of his journey with 90 kiloliters of fuel left. For the next 90 _______, the professor and Orokana's planes fly towards each other, meeting at the three-quarter mark. Just as the professor's fuel is about the run out, he sees Orokana's plane. She gives him 45 kiloliters of her remaining 90, leaving them with 45 each. But that's just half of what they need to make it to the airport. ___________, this is exactly when Fugōri, having ________, takes off. 45 minutes later, just as the other two planes are about to run empty, he _____ them at the 315 degree point and transfers 45 kiloliters of fuel to each, leaving 45 for himself. All three planes land at the airport just as their fuel gauges reach zero. As the reporters and photographers cheer, the professor promises his planes will soon be available for commercial flights, just as soon as they figure out how to keep their inflight _____ from spilling everywhere.

## Solution

1. journey
2. slowing
3. equator
4. refueling
5. fortunately
6. meals
7. equipped
8. elaborate
9. honest
10. refueled
11. meets
12. embarked
13. fugōri
15. experiment
16. break
17. takes
18. granted
19. permission
20. plane
21. running
22. kiloliters
23. professor
24. consistently
25. ground
26. continuously
27. minutes
28. world
29. middle
30. anxiously
31. passed

## Important Words

1. achieve
4. airport
5. album
6. amount
8. anxiously
9. assistant
10. assistants
11. awaiting
12. break
13. building
14. calculations
15. cheer
16. circle
17. commercial
18. complete
19. consistently
20. continuously
21. coordinate
22. crashing
23. degree
24. design
25. designed
26. devised
27. dime
28. direction
29. dream
30. east
31. eccentric
32. elaborate
33. embarked
34. empty
35. equator
36. equipped
37. experiment
38. famous
39. favorite
40. features
41. figure
42. finish
43. flights
44. fly
45. flying
46. fortunately
47. fuel
48. fugōri
49. fukanō
50. fully
51. fun
52. gauges
53. granted
54. ground
55. hair
56. halfway
58. helps
59. hold
60. honest
61. hours
62. identical
63. incredible
64. inflight
65. instantly
66. journey
67. key
68. kiloliter
69. kiloliters
70. land
71. leaving
72. left
73. line
75. located
76. long
77. longitude
78. lounge
79. making
80. mark
81. maximize
82. meals
83. meeting
84. meets
85. midair
86. middle
87. minute
88. minutes
89. mission
90. nonstop
91. noon
92. orokana
93. passed
94. pause
95. permission
96. photographers
97. pilot
98. plane
99. planes
100. point
101. professor
102. promises
103. pull
104. puts
105. reach
107. refuel
108. refueled
109. refueling
110. remaining
111. reporters
112. return
113. returns
114. run
115. running
116. scientist
117. sees
118. setting
119. shorter
120. single
121. slightly
122. slowing
123. solution
124. speed
125. spilling
126. spot
127. starting
128. stretch
129. stretches
130. support
131. symmetrically
132. takeoff
133. takes
134. tank
135. time
136. touches
137. transfer
138. transfers
139. travel
140. trip
141. trips
142. turn
143. unsupported
144. wasting
145. west
146. world