【答案解析】
   Healthy activities can provide people with new knowledge and happiness physically and mentally when they relax from a fast pace and high pressure job.
   All kinds of sports fall into this category. When climbing mountains, people have to try their best to overcome physical and psychological difficulties. They may encourage each other and get to the top together. While they enjoy the scenery from the summit, feeling the friendship and success, their muscles and organs have been strengthened and the blood circulation has been promoted to a better state. When people play basketball, they improve their skills and also have a better understanding of compromise and team efforts. Some Western games have become popular in China. From billiards and bowling, people obtain an experience of western leisure.
   Reading is another healthy activity in holidays. Sitting comfortably on a sofa, a book can take its reader from icy polar regions to tropical rain forests to see various natural wonders. The reader can also meditate on the causes of an ancient empire rise or the invention of a new medical instrument. When a reader is wandering along the aisles of book shelves and finally finds a book he likes very much and decides to buy it, an idea will suddenly come to him: "Today I've dug out a treasure". Or he just simply borrows a book reading in a library with the same kind people who want to "charge themselves with new energy for future study and work"; he finds the life is full of hope.
   Tourism can combine physical exercises and knowledge learning for people to have a good holiday. People go to different places to see their special beauty, unique history, local culture and widen their sight. They take different transportation tools with an accurate plan and obtain extreme excitement to enrich their life experiences. They buy souvenirs everywhere based on their appreciation of arts. They take nothing but pictures and leave nothing but footprints under the principle of ecosystem protection. All these activities will improve the personality of the tourists.
   To take advantage of a diversity of holiday activities is really healthy and significant.