题目内容：
根据以下材料，回答题Themedical world is gradually realizing that the quality of the environment inhospitals may play a significant role in the process of recovery from illness.
As partof a nationwide effort in Britain to bring art out of the galleries and intopublic places,some of the country's most talented artists have been called into transform older hospitals and to soften the hard edges of modern buildings.Of the 2500 National Health Service hospitals in Britain,almost 100 now havesignificant collections of contemporary art in corridors, waiting areas and treatmentrooms.
Theserecent initiatives owe a great deal to one artist, Peter Senior, who set up hisstudio at a Manchester hospital in northeastern England during the early 1970s.He felt the artist had lost his place in modern society, and that art should beenjoyed by a wider audience.
Atypical hospital waiting room might have as many as 500 visitors each week.What better place to hold regular exhibitions of art? Senior held the firstexhibition of his own paintings in the out-patients waiting area of theManchester Royal Hospital in 1975. Believed to be Britain's first hospitalartist, Senior was so much in demand that he was soon joined by a team of sixyoung art school graduates.
Theeffect is striking. Now in the corridors and waiting rooms the visitorexperiences a full view of fresh colors, playful images and restful courtyards.
Thequality of the environment may reduce the need for expensive drugs when apatient is recovering from an illness. A study has shown that patients who hada view onto a garden needed half the number of strong pain killers comparedwith patients who had no view at all or only a brick wall to look at.
According to the passage, "to soften the hard edges of modernbuildings" means_______. A． topull down hospital buildings
A．to pull down hospital buildings
B． todecorate hospitals with art collections
B．to decorate hospitals with art collections
C． toimprove the quality of treatment in hospitals
C．to improve the quality of treatment in hospitals
D． tomake the corners of hospital buildings round
D．to make the corners of hospital buildings round
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