İngilizce Soru Bankası - paragraf test24 Soru 10

10-) One may assume from the passage that one of the most dangerous features of a 'white out' is that.............. .

The worst condition of Antarctic flying is called the "white out." Pilots have said it is like "flying in a bowl of milk." Atmospheric conditions make the snow and sky appear to blend together. There is no horizon, which leaves them without any visible check point above or below the airplane. Despite these handicaps, aviation is vital to polar exploration. Airplane flights, however, cannot be used for getting many kinds of information. Plant and animal life cannot be studied from the air. An air observer cannot make detailed examinations of mineral deposits, and he cannot obtain records of weather conditions in stormy times when airplanes cannot be flown. For all such studies, men must still work on the ground.