题目内容：
A．The Imperial PalaceWhat strikes one first in a bird' s-eye viewof Beijing proper is a vast tract of golden roofs flashing bril-liantly in thesun with purple walls occasionally emerging amid them and a stretch ofluxuriant tree leaves flanking oneach side. That is the former Imperial Palace,popularly known as the Forbidden City, from which twenty-four em-perors of theMing and Qing Dynasties ruled China for some 500 years--from 1420 to 1911. TheMing Emperor Yong Le, who usurped the throne from his nephew and made Beijing thecapital, ordered its construction, on whichapproximately I0,000 artists and amillion workmen toiled for 14 years from 1406 to 1420. At present, the Palaceisan elaborate museum that presents the largest and most complete ensemble oftraditional architecture complex andmore than 900, 000 pieces of courttreasures in all dynasties in China.
Located in the center of Beijing, the entirepalace area, rectangular in shape and72 hectares in size, is surroun-ded bywalls ten meters high and a moat 52 meters wide. At each comer of the wallstands a watchtower with adouble-eave roof covered with yellow glazed tiles.
The main buildings, the six great halls, onefollowing the other, are set facing south along the central north-south axisfrom the Meridian Gate, the south entrance, to Shenwumen, the great gatepiercing in the north wall. Oneither side of the palace are many comparativelysmall buildings. Symmetrically in the northeastern section lie the sixEasternPalaces and in the northwestern section the six Western Palaces. The Palacearea is divided into two parts:the Outer Court and the Inner Palace. The formerconsists of the first three main hails, where the emperor receivedhis courtiersand conducted grand ceremonies, while the latter was the living quarters forthe imperial residence. Atthe rear of the Inner Palace is the Imperial Gardenwhere the emperor and his family sought recreation.
B．The Temple of Heaven
The Temple of Heaven was initially built inYongle Year 18 of the Ming Dynasty ( in 1420). Situatedin the southern part ofthe city, it covers the total area of 273 hectares. With the additions andrebuilding during theMing, Qing and other Dynasties, this grand set ofstructures look magnificent and glorious; the dignified environ-ment appearssolemn and respectful. It is the place for both Ming and Qing Dynasty' sEmperors to worship Heavenand pray for good harvest. The northern part of theTemple is circular while the southern part is square, implying"sky isround and earth is square" to better symbolize heaven and earth. The wholecompound is enclosed by twowalls, dividing the whole Temple into inner andouter areas, with the main structures enclosed in the inner area. Themostimportant constructions are the Hall of Prayer for Good Harvest, the CircularMound Altar, Imperial Heaven,The Imperial Vault of Heaven, Heaven Kitchen, LongCorridor and so on, as well as the Echo Wall, the Triple-Sound Stone, theSeven-Star Stone and others of historic interest and scenic beauty. The Templeof Heaven is acomprehensive expression of the unique construction techniquesfrom Ming and Qing Dynasties; it is China' s mosttreasured ancientarchitecture; it is also the world' s largest architectural complex forworshipping heaven. In 1998,it was included in the "list of the worldheritages" by the United Nation' s Educational, Scientific and CulturalOr-ganization.
C．PotalaPalace
In 641, after marrying Princess Wencheng,Songtsen Gampo decided to build a grand palace to accom-modate her and let hisdescendants remember the event. However, the original palace was destroyed dueto a lighte-ning strike and succeeding warfare during Landama' s reign. In theseventeenth century under the reign of the FifthDalai Lama, Potala was rebuilt.The Thirteenth Dalai Lama expanded it to today' s scale. The monastery-likepal-ace, reclining against and capping Red Hill, was the religious andpolitical center of old Tibet and the winter palaceof Dalai Lamas. The palaceis more than 117 meters (384 feet) in height and 360 ( 1,180 feet) in width,occupyinga building space of 90 thonsand square meters. Potala is composed ofWhite Palace and Red Palace. The former isfor secular use while the latter isfor religious.
The White Palace consists of offices,dormitories, a Buddhist official seminary and a printing house. From theeastentrance of the palace, painted with images of Four Heaveniy Kings, a broadcorridor upwards leads to DeyangShar .courtyard, which used to be where DalaiLamas watched operas. Afoot the large and open courtyard, there usedto be aseminary dormitories. West of the courtyard is the White Palace. There arethree ladder stairs reaching in-side of it, liowever, tbe central one wasreserved for only Dalai Lamas and central government magistrates dispatched
toTibet. In the first hallway, there are huge murals describing the constructionof Potala Palace and Jokhang Templeand the procession of Princess Wenchengreaching Tibet. On the south wall, visitors will see an edict signed withtheGreat Fifth' s handprint. The White Palace mainly serves as the politicalheadquarter and Dalai Lamas' living quarters.The West Chamber of Sunshine andthe East Chamber of Sunshine lie as the roof of the White Palace. Theybelongedto the Thirteenth Dalai Lama and the Fourteenth Dalai Lama respectively.Beneath the East Chamber of Sunshine is thelargest hall in the White Palace,where Dalai Lamas ascended throne and ruled Tibet.
D．JokhangTemple
Jokhang Temple is the spiritual center ofTibet. Everyday pilgrims from every comer of Tibet trek along distance to thetemple. Some of them even progress prostrate by body length to the threshold ofthe temple. Pil-grims fuel myriad of flickering butter lamps with yak butter,or honor their deities with white scarves ( Kha-btags orHada) while murmuringsacred mantras to show their pieties to the Buddha.
It lies at the center of the old Lhasa. Builtin 647 by Songtsen Gampo and his two foreign wives, it has ahistory of morethan 1,300. It was said that Nepal Princess Tritsun decided to build a templeto house the JowoSakyamuni aged 12 brought by Chinese Princess Wencheng.Princess Wencheng reckoned according to Chinese as-trology that the templeshould be built on the pool where the Jokhang now locates. She contended thatthe pool wasa witch' s heart, so the temple should be built on the pool to getdd of evils. The pool still exists under the temple.Then goats were used as themain pack animals, as is the reason the city is called Lhasa. The constructiontook 12months. However it was originally small and had been expanded to today's scale in later dynasties. When the FifthDalai Lama took reign, large-scalereconstruction and renovation had been done. The temple is a combination ofHan,Tibetan and Nepalese architectural techniques. Visitors will see sphinx and otherweird and sacred sculptures.
根据以上资料，回答题。
is the spiritual center of Tibet?
__________
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