单选题
There are a great many books, web sites, and training 24 today more or less dedicated to the idea that being bored is a major sin, for which the only 25 is to find ways to be busy and productive every waking moment. People who follow this 26 are constantly on-the-go—and feelings of boredom quickly smothered with yet more activities. At work, at home, at play, each 27 must be filled with things to ward off the slightest possibility of being bored. As a society, we're over-stimulated to the point of mania, like hyper-excited children in those few moments at a party before it all goes wrong and everyone starts crying. I suspect the rise in ADHD isn't only 28 to eating strange chemicals in the diet; we're training ourselves to require continual distraction, reducing our attention-span to less than a few seconds before we're bored again. It used to be only teenagers who 29 . 'I'm so bored!' Now almost everyone acts as if not having something truly exciting to do every moment is either the first sign of senility or—much wore—positive proof that they, and their 30 are gone, past it, over the hill, on the way towards oblivion. Yet boredom is, in reality, crucial to any ability to be truly productive, let 31 effective. If you're fiat-out busy and engaged all the time, you may feel important, but the reality is 32 . It's those who are constantly 33 with activities that are most likely to be headed towards a nasty let-down. A. alone B. careers C. courses D. cure E. different F. dissatisfied G. distracted H. due I. felt J. idea K. moment L. sighed M. thanks N. time O. way
问答题
【正确答案】C
【答案解析】由首句“many books, web sites, and training ______,”可知填入空格的词应为与books，web sites并列的名词。根据句意“许多书籍，网页以及培训______都主张，……”，可知所选单词应与培训、学习有关，选项中只有C符合，courses意为“课程”。