单项选择题It can be inferred from the passage that European art trends probably affected United States art most during ______.
单项选择题Why does the author mention Alfred Stieglitz
单项选择题The expression ... barking up the wrong tree (Par
单项选择题According to the author, which of the following was a favorite subject for American modernists
单项选择题We can infer from the passage that ______.