现代市场经济国家政府的基本职能是建立并维护社会和市场秩序。()

未分类题The studies in the text seem to indicate that people tend to______.A．use accent as the main way to judge othersB．criticize those whose accents are different from their ownC．think their own accent is superior and stereotype accents of othersD．have very little knowledge about what constitutes a standard accent

判断题公共部门具有劳动密集型特征。()

未分类题The term 'heavy user' used in the text refers mainly to______.A．overweight eatersB．people who are willing to spend the most money on fast foodC．people who frequently ate at a fast food restaurantD．people who would order larger orders at a time

未分类题The frequency 849MHz doesnt interfere with the planes GPS system because______.A．it's out of the range of airline communicationsB．it's like a moving Starbucks hot spotC．it was sold to a Wi-Fi service providerD．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