Golf is a game in which players hit a small， hard ball with specially designed clubs over and outdoor course. The object is to deposit the ball in a cup， or a hole， using as few as strokes as possible. The standard course， usually， more than 6000 yard （about 5500meters）in length， is divided into 18 holes， each consisting of a tee from which the ball is initially driven the fairway， bounded by tall grass and containing natural or artificial obstacles （hazards） such as water and sand traps； and the tree， a smooth surface on which the cup（4.5 in/11.45in diameter） is located. A set of golf clubs includes 3 or 4 woods， 9 or 10 irons， on a putter for use on the green. Although its origin is unknown， golf is identified with Scotland， where it was played as early as 1527. The British open tournament club was established in 1860. The game may have been played in America in the 11th century， with the first permanent club， at Yonker， N.Y. was not organized until 1888. In the 20th century， golf experienced a tremendous increase in popularity .The professional tour， led by such stars as Arnold PA（ MER and JACK NICKLAW） emerged a s a major attraction after world war two.