The frequency 849MHz doesnt interfere with the planes GPS system because______.
A．it's out of the range of airline communications
B．it's like a moving Starbucks hot spot
C．it was sold to a Wi-Fi service provider
D．it's received by the antenna on top of a plane

未分类题It is indicated in Paragraph 1 and 2 that______.A．all airlines provide Wi-Fi Internet serviceB．aircraft-communications' frequency is higher than that of Wi-FiC．airlines provide Wi-Fi service selectivelyD．not all mobile phones' signal will interfere with navigation

未分类题The main idea of the text is that______.A．accents are unfortunately often used to reinforce preexisting linguistic stereotypesB．accents are used to identify the social background of a speakerC．accents are generally used to form. negative opinions of the speakerD．we must stop discriminating against people due to accent

未分类题According to the text, the process of linguistic prejudice is deeper than it seems becauseA．accents may be viewed as forms of social identityB．accents are key ways to indicate class and prosperityC．accents are typically most distinct among minority groupsD．there is really no one accent that should be thought of as superior

未分类题According to paragraph 1, the author believes that communication skills areA．doubtlessly significant.B．to some extent important.C．inferior to breathing skills.D．a concern of the left-brain age.

未分类题According to the text, prolonged deficit spending may result inA．increasing investment.B．declined consumption.C．prosperous economy.D．expanded export.

判断题公共政策制定和执行的目的是解决私人问题。()

未分类题It can be inferred from the last paragraph thatA．temporary income tax cuts can not promote consumption.B．temporary deficit can make economy condition become better.C．temporary deficit spending has a negative effect on future economy.D．adequate taxation can boost the economy in a recession.

未分类题From paragraph 3, it can be inferred thatA．customers can be easily delighted.B．shoppers go to bookstores only to browse.C．extra privileges will be charged in the future.D．bookstores need to offer more cultural service.

未分类题According to Alex Lifschutz, the most important thing a bookstore should present isA．cozy atmosphere.B．delightful customer-experience.C．stylish bar and cafe.D．multi-functional arrangement of space.

未分类题教师心理健康问题产生的原因有()和个人因素。

未分类题According to paragraph 1, web watchdogsA．are faced with tough choices to regulate web companies.B．keep a close eye on every internet company.C．scapegoat famous companies to keep others in alarm.D．report losses of customer data to the authorities.

判断题公共管理学是一门研究公共管理规律的学科。()

未分类题After comparing the effects, the researchers found thatA．sibling bullying is as detrimental as peer aggression.B．sibling bullying is actually not a matter to worry about.C．sibling bullying is more harmful than peer aggression.D．sibling bullying is closely related to peer aggression.

判断题公共管理的核心问题是提高效率。()

判断题公共部门的垄断性主要是公共服务的非营利性、管制性等原因造成的。()