According to the text, the problem with the study of human nature is______.
A．that it is mysterious
B．insights lead to more questions and mystery
C．it is almost always used for the wrong purposes
D．there are too many competing theories

未分类题According to the first paragraph, children as an Internet market target group______.A．are using it at an earlier and earlier ageB．are overtaking the adult market due to their spending powerC．are growing at an incredible rateD．have created a growing advertising market

判断题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