23. According to Quinn, the rats released the social robot because they
[A]tried to practice a means of escape.
[B]expected it to do the same in return.
[C]wanted to display their intelligence.
[D]considered that an interesting game.
24. James Wiles notes that rats
[A]can remember other rats'facial features.
[B]differentiate smells better than sizes.
[C]respond more to actions than to looks.
[D]can be scared by a plastic box on wheels.
25. It can be learned from the text that rats
[A] appear to be adaptable to new surroundings
[B] are more socially active than other animals
[C] behave differently from children in socializing
[D] are more sensitive to social cues than expected
26. Which of the following has contributed to CEO pay rise?
[A] The growth in the number of corporations.
[B] The general pay rise with a better economy.
[C] Increased business opportunities for top firms.
[D] Close cooperation among leading economies.
27. Compared with their predecessors, today' s CEOs are required to .
[A] foster a stronger sense of teamwork
[B] finance more research and development
[C] establish closer ties with tech companies
[D] operate more globalized companies
28. CEO pay has been rising since the 1970s despite .
[A] continual internal opposition
[B] strict corporate governance
[C] conservative business strategies
[D] repeated government warnings
29. High CEO pay can be justified by the fact that it helps .
[A] confirm the status of CEOs
[B] motive inside candidates
[C] boost the efficiency of CEOs
[D] increase corporate value
30. The most suitable title for this text would be
[A] CEOs Are Not Overpaid
[B] CEO Pay: Past and Present
[C] CEOs'Challenges of Today
[D] CEO Traits: Not Easy to Define
31. Which of the following is true about Madrid's clean air zone?
[A] Its effects are questionable.
[B] It has been opposed by a judge.
[C] It needs tougher enforcement.
[D] Its fate is yet to be decided.
32. Which is considered a weakness of the city-level measures to tackle dirty air?
[A] They are biased against car manufacturers.
[B] They prove impractical for city councils.
[C] They are deemed too mild for politicians.
[D] They put too much burden on individual motorists.
