33. What is the much-argued solution to the labor shortage in U.S. farming?
[A] To attract younger laborers to farm work.
[B] To get native U.S. workers back to farming.
[C] To use more robots to grow high-value crops.
[D] To strengthen financial support for farmers.
34. Agricultural employers complain about the H-2A visa for its .
[A] slow granting procedures
[B] limit on duration of stay
[C] tightened requirements
[D] control of annual adm1ss10ns
35. Which of the following could be the best title for this text?
[A] U.S. Agriculture in Decline?
[B] Import Food or Labor?
[C] America Saved by Mexico?
[D] Manpower vs. Automation?
36. Some celebrities star in a new video to
[A] demand new laws on the use of plastics
[B] urge consumers to cut the use of plastics
[C] invite public opinion on the plastics crisis
[D] disclose the causes of the plastics crisis
3 7. The author is concerned that "moral licensing" may .
[A] mislead us into doing worthless things
[B] prevent us from making further efforts
[C] weaken our sense of accomplishment
[D] suppress our desire for success
38. By pointing out our identity "citizens", the author indicates that .
[A] our focus should be shifted to community welfare
[B] our relationship with local industries is improving
[C] we have been actively exercising our civil rights
[D] we should press our government to lead the combat
39. DeSombre argues that the best way for a collective change should be .
[A] a win-win arrangement
[B] a self-driven mechanism
[C] a cost-effective approach
[D] a top-down process
40. The author concludes that individual efforts
[A] can be too aggressive
[B] can be too inconsistent
[C] are far from sufficient
[D] are far from rational
21. Quinn and her colleagues conducted a test to see if rats can .
[A] pick up social signals from non-living rats
[B] distinguish a friendly rat from a hostile one
[C] attain sociable traits through special training
[D] send out warning messages to their fellows
22. What did the asocial robot do during the 眈periment?
[A] It followed the social robot.
[B] It played with some toys.
[C] It set the trapped rats free.
[D] It moved around alone.
