All of the following are mentioned in paragraph l as results of the trend toward installing contemporary art in public places in the United States EXCEPT（）
A. the transfer of artwork from private to public sites
B. artworks that represent a city's special character
C. greater interest in art by the American public
D. a broader understanding of the varieties of contemporary art
查看答案
What is the passage mainly about（）
A. The influence of art on urban architecture in United States cities
B. The growth of public art in United States cities
C. The increase in public appreciation of art in the United States
D. The differences between public art in Europe and the United States
The word "exceptional" in line 2 is closest in meaning to（）
A. remarkable
B. fearless
C. expert
D. visible
According to the passage, why do ants use different compounds as trail pheromones（）
A. To reduce their sensitivity to some chemicals
B. To attract different types of ants
C. To protect their trail from other species
D. To indicate how far away the food is
The word "these" in line 13 refers to（）
A. seeds
B. river valleys
C. the Midwest and the Southeast
D. experimentation and domestication
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