According to the author, what seems to be the root cause for the lack of skilled manpower in American industry

单项选择题The City of ______ , which was formed by formerly known as Port Jackson, is the place of the earliest colonial settlement in Australia.

单项选择题The background of ______, a novel by Charles Dickens, is set in the French Revolution.

单项选择题Wordsworth's poetry, divided by the subjects, falls into two major groups: one about ______ and the other about ______.

单项选择题What can be inferred from the dialogue in the last paragraph

单项选择题Emphasis on academic research, in the author's opinion, ______.