From the first three paragraphs, we learn that______.
A．it's more difficult for outsiders than insiders to ask dumb questions
B．dumb questions are usually asked by dumb people
C．though dumb questions aren't easy to ask, they can be useful
D．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

未分类题Which of the following can best summarize the main idea of this text?A．The beer in the best-shaped glass tastes best.B．What sort of glass can affect the speed of drinking.C．The shape and the contents of a glass matter.D．Angela Attwood offers us a research about glasses.

未分类题What can be inferred from Paragraph 4?A．The volunteers spent less time in drinking beer out of a jug.B．Whether a glass was full or half-full makes no difference to drinking speed.C．It took the volunteer five minutes to drink wine out of a straight glass.D．If a glass was full of lemonade, its shape matters.