74：D 答案见文章第一段That's the question that faces thousands of students in Britain every year.
75：C 机会
76：C 答案可见倒数第二段David Willetts,encourages students to study at home or to learn one kind of skills,such as cooking,hairdressing and so on .
77：A 答案见最后一段
78：C
79：B
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