[18:41.94]is going to cost at least 10 billion dollars
[18:45.21]if you include research and development.
[18:48.39]By the end of this century,
[18:50.14]the cost will be down to a few million.
[18:53.20]On the other hand,
[18:54.40]the diving suit and a set of basic tools needed
[18:57.79]for skin-diving can be bought for 20 dollars.
[19:00.86]My second argument is more philosophical.
[19:03.92]The ocean, surprisingly enough,
[19:06.22]has many things in common with space.
[19:09.06]In their different ways,
[19:10.48]both sea and space are equally hostile.
[19:14.64]If we wish to survive in either for any length of time,
[19:18.79]we need to have mechanical aids.
[19:21.31]The diving suit helped the design of the space suit.
[19:25.57]The feelings and the emotions of a man beneath the sea
[19:28.96]will be much like those of a man beyond the atmosphere.
[19:34.10]Questions 32 to 35 are based on the passage you have just heard.
[19:40.01]32. How did the speaker's friends respond to his change of interest?
[20:01.23]33. What is one of the reasons for the speaker
[20:06.05]to switch his interest to underwater exploration?
[20:25.45]34. In what way does the speaker
[20:29.75]think diving is similar to space travel?
[20:47.98]35. What is the speaker's purpose in giving this talk?
[21:08.29]Section C
[21:10.69]Directions: In this section,
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