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 EXCET ______.
单项选择题The author thinks that if the Bill becomes law, its effect would be______
单项选择题By quoting the growing percentage points of the aged in the population, the author seems to imply that______.
单项选择题At the end of the passage, the author seems to imply that success of the Bill depends upon ______.