53. What is the main problem in running a ski resort? (A)Difficulty in hiring land (B)Lack of business experience. (C)Price wars with other ski resorts, (D)Shortage of water and electricity,

50.What does this text mainly talk about? (A)Convenience for skiers brought about by private cars. (B)Skiing as a new way of enjoying one's spare time. (C)Things to be considered when starting a ski resort. (D)A sudden increase of ski training classes in Beijing.