Which of the following is true about the Braess paradox?
A．A mathematician of a university in Seoul came up with it.
B．People first identified it in the 1920s.
C．The Americans didn't pay much attention to it in the first place.
D．It claims that more capacity brings about more efficiency.

未分类题Why does the author assert that only through travel we 'truly touch one another'?A．He wants to emphasize tourism's powerful effect on combating social problems.B．He believes tourism makes it possible for people to help one another.C．He believes travel is the only way cultures can learn about each other.D．He thinks that sincere learning of a culture is only possible by travel.

未分类题From the text, we know that the authors greatest worry is______.A．our lack of technological understanding of the process involvedB．our lack of technological capabilityC．creating technology without really understanding the issuesD．our refusal to face the consequences of the technology we create

未分类题通过crm企业可以获得的收益有()。

未分类题From the first paragraph we learn that the travel industry______.A．is going to give money to aid povertyB．has improved its revenueC．is financially healthier than everD．is better able to help reduce poverty than ever

未分类题A police officer, questioning suspects who are not under arrest, must inform. suspects of their ______.A．Miranda rightsB．right to an attorneyC．freedom to leaveD．right to make a phone call

未分类题According to the text, police officers______.A．are allowed to question imprisoned inmates about their crimesB．sometimes go undercover and receive confessions from inmatesC．should try to become friendly with inmates in order to gather informationD．should always read inmates their rights before talking to them

未分类题The privilege against self-incrimination can be found in______.A．Supreme Court opinionB．prison rules and regulationsC．state law governing prisonsD．the U.S. Constitution

未分类题Some species are better learner than others partly because______.A．some animals prefer to remain dumbB．some animals don't have a nervous systemC．learning may endanger some animals' healthD．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

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