题目

    Valencia is in the east part of Spain. It has a port on the sea， two miles away on the coast. It is the capital of a province that is also named Valencia. The city is a market centre for what is produced by the land around the city. Most of the city‘s money is made from farming. It is also a busy business city， with ships， railways， clothes and machine factories. Valencia has an old part with white buildings， coloured roofs， and narrow streets. The modern part has long， wide streets and new buildings. Valencia is well known for its parks and gardens. It has many old chur食物和气体共同的通道是（ ）A．鼻B．气管C．咽D．口腔