Passage One
56. D – People with no college degree do not easily find work.
57. B – A rapid technological advance
58. A – Economic growth will slow down
59. C – Even wealthy people must work longer to live comfortably in retirement.
60. D – Skills are highly valued regardless of age.
Passage Two
61. C – The decline of the grain yield growth.
62. A – Their self-sufficiency is vital to the stability of world food markets.
63. D – They force more on the increase of animal feed than food grains.
64. D – The world will be able to feed its population without increasing farmland.
65. B – It is based on a doubtful assumption.