C．Donations. D．Documents.

解析：词义猜测题。最后一段强调了对主要作品进行了精选(the fine selection of the major works)，又点明contributions来自其他机构，所以可推断出contributions应该属于works的范畴。故选项A正确。

答案：A

Ⅳ.阅读填句

　　　1　You can find it on buildings, sidewalks，street signs and trash cans from Tokyo to Paris, from Moscow to Cape Town. Street art has become a global culture. Even art museums and galleries are collecting the works of street artists.

　　Street art started very secretly because it was illegal to paint on public and private property without permission.　2　Some think it is a crime and others think it is a very beautiful new form of culture. Art experts say that the street art movement began in New York in the 1960s. Young adults painted words and other images on the walls and trains. This colourful style of writing became known as graffiti(涂鸦)，whose art showed that young people wanted to rebel against society.

　　Street artists do their work for different reasons.　3　They choose street art because it is closer to the people. Some artists try to express their political opinion in their works. Others like to do things that are not allowed and hope they can't be caught. Advertising companies also use street art in their ads because it gives people the impressions of youth and energy.

　　　4　Artists can show their pictures to people all over the world. Many people, however, say that seeing a picture on the Internet is never as good as seeing it alive.

　　　5　There, it will continue to change and grow.

A．Some of them do not like artists who make so much money in