According to the text, oil prices are kept high because______.
A．only a little oil is being refined
B．refineries take a long time to build
C．people are driving too much
D．supplies of refined oil are limited

未分类题Which of the following statements is true according to the text?A．Peter Drucker is considered old-fashioned in today's business world.B．Sherron Watkins was more than likely fired shortly after her memo to Ken Lay.C．Sherron Watkins was brave enough to ask what appeared to be a stupid question.D．Peter Drucker was paid too much to question employees about their company.

未分类题From the first three paragraphs, we learn that______.A．it's more difficult for outsiders than insiders to ask dumb questionsB．dumb questions are usually asked by dumb peopleC．though dumb questions aren't easy to ask, they can be usefulD．most people don't need courage to ask dumb questions

未分类题According to the opening paragraph, data security is now high on bosses agendas becauseA．low-level IT staff cannot deal with it any moreB．bosses have dealt with all the other problems affecting their businessesC．data protection is a hot topicD．it is the kind of issue that can cause them to lose their jobs

未分类题Which of the following best describes the word 'sap'(line 3, para. 4)?

未分类题According to the author, the key of understanding economics is______.A．paradigmB．conformityC．methodological approachD．pragmatism