The Golden Gate Bridge is one of the world's greatest suspension bridges and acclaimed also as the world's most beautiful bridge. The Golden Gate, which this bridge spans, is a broad, deep three-mile strait, connecting the Pacific Ocean and San Francisco Bay. The Golden Gate Bridge is 8450 feet long from abutment to abutment, exclusive of approaches. Painted red-orange, it contrasts with the greens, browns and blues of its setting and surroundings. Its towers rise shove the Golden Gate to the height of a 65-story building, and its roadway structure suspended from the great main cables which pass over the lofty towers, rides above the waters at a 19-story height. The largest ships can sail under this bridge. The Golden Gate Bridge is a result of will and action. In 1917, the city of San Francisco asked Jaseph B Strauss, the extraordinary bridge builder and designer to tackle the problem of bridging the Gate, a problem generation of San Franciscans had regarded as insoluble and impossible. Construction of the Golden Gate Bridge was started on January 5, 1933. Through nearly five years of actual building, slowed and delayed often by elements no human could control, the work went on bit by bit until it was completed in 1937. On May 27 of the same year it was opened to pedestrian traffic as a gala (盛典，盛大欢庆日) and to regular vehicular and pedestrian traffic on the following day. The Golden Gate Bridge has been admired by visitors from all over the world. They admire its living grace in its magnificent setting. They respond to its many moods, its warm and vibrant glow in the early sun its seeming play with ,or disdain of, incoming fog its retiring, shadowy form. before the sunset its lovely appearance in its lights at night. To residents of the San Francisco Bay area, the Golden Gate Bridge is looked upon as the 'Statue of Liberty' of the Pacific. After you read the introduction to the Golden Gate Bridge, you know 'Golden Gate' refers to______.