19．Louis Kahn is considered one of the most important American architect of the 20th century，who helped define（定義）modern architecture．
Kahn showed excellence as all artist at an early age．He later went to the University of Pennsylvania and studied architecture full time．
Louis Kahn Architecture is the art and science of designing and building structures．He was very interested in the look and feel of the materials he used．He used brick and concrete in new and special ways．Kahn also liked natural light to enter his buildings through interesting kinds of windows and openings．Kahn's work can also be identified by his creative use of geometric shapes．
Many of his buildings use squares，circles and triangles．Louis Kahn's buildings have many influences．Some experts say his trip to Rome in 1951 influenced him the most．He also traveled through other parts of Italy，Greece and Egypt．There，he saw the ancient Greek and Roman ruins that influenced him to develop an architecture that combines both modem and ancient designs．
Kahn's buildings share a common solidity and heaviness．They are very different from the works of other famous architects of the period，who preferred light and airy buildings．Their weightless-looking structures were mostly made of glass and metal while Kahn used stone and concrete．Many of his structures look more ancient than modern．
Kahn's first important project was the Yale Art Gallery．The outside of the building is very simple．The inside of the gallery shows Kahn's great artistic sense．Its completion represented an important step in Kahn's professional life．
Though being a successful architect，Kahn was not a very good businessman．He would change his designs many times．This would make each project take a great deal of time and cost more money．The majority of the projects he designed were never built．Also，he did．not like to compromise his design ideas to satisfy a buyer's wishes．For this reason and others，Kahn did not make many buildings．In fact，when Kahn died，he was in great debt．This is especially unusual since he was considered one of the most important architects in the world．
56．By writing the text，the writer mainly aims toB．
A．tell us what kind of style of．Kahn's projects
B．give us a brief，introduction of Louis Kahn
C．explain the things that influenced Kahn's buildings most
D．introduce the father of modem architecture to us
57．What does paragraph 3 mainly tell us？D
A．The definition of Kahn's architecture．
B．The an of Kahn's architecture．
C．The special ways of Kahn's architecture．
D．The style of Kahn's architecture．
58．Which of the following building might be designed by Louis Kahn？B
59．Why were Kahn's buildings looking more ancient than modern？A
A．The ancient Greek and Roman ruins influenced him greatly．
B．The architects of his period preferred ancient buildings．
C．His first important project is of ancient style．
D．He disliked liked modern architecture and seldom changed his designs．
60．Which of the following may explain why Kahn was in debt before death？C
A．His architectures were not famous cnough．
B．The buyers'wishes were hard to meet．
C．Many projects he designed didn't bring him any money．
D．The projects he designed were too complex to build．
