YDS CÜMLE ATMA / TEST 6 29. Soru

29.

(I) In the early days of space travel, every
pound weight added £ 100 to the cost of
the flight. (II) So food had to be as high as
possible. (III) One way of making food
higher was to remove the moisture from it.
(IV) This was realised by a process known
as freeze-drying. (V) Frozen food was, of
course, deficient in vitamins, which were
necessary for the astronauts in harsh
conditions.