Some species are better learner than others partly because______.
A．some animals prefer to remain dumb
B．some animals don't have a nervous system
C．learning may endanger some animals' health
D．they are better taught than others

判断题绩效管理有利于促进民主政治的发展。()

未分类题According to the text, the problem with the study of human nature is______.A．that it is mysteriousB．insights lead to more questions and mysteryC．it is almost always used for the wrong purposesD．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