单项选择题Martin Goldsmith believes that computer music has not yet been widely accepted because ______.
单项选择题Machover's experiments on digital music are for the following purposes EXCEPT ______.
单项选择题In the sentence Visitors approach the museum through a glass atrium, open an enormous door, enter a cave (paragraph 6), the word atrium has the Chinese meaning of ______.
单项选择题Consumers are concerned about the changes in the package size. mainly because ______.
单项选择题The author is critical mainly of ______.