YDS PARAGRAF DOLDURMA / TEST 6 31. Soru
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31.
- Until recently sea water has been of very
little value to man. But now, at last,
engineers are discovering that it can be very
valuable indeed. —. The French have proven
that this is possible. It has also been
suggested that seaside cities should use
sea water for cleaning purposes. But
engineers say that the cost would be too
great. Special machines and pipes would be
needed.
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