【正文】
ield work. Taking a full time job to earn money for one or two months is another benefit the long vacation provides And sometimes a good academic thesis with a considerable length needs a long vacation. Those who prefer short vacations also have understandable reasons. For two or three weeks39。 t keep the high study efficiency without good. health. The same thing is true with workers, scientists and doctors. In my opinion, good diet and exercises are two major ways to keep healthy. The food we eat every day must be rational and should include meat, vegetables, eggs, and fruit. It is important to drink water every day and not to get addicted to drinking coffee or some other soft drinks. Exercising ev