(D) The proportion of farmers in the United States labor force decreased from 64 per- cent in 1850 to 49 percent in 1880.
(E) The proportion of farmers in the general population increased from 68 percent in 1850 to 72 percent in 1880.
N0 4-2 SECTION 4
1. The ----of mass literacy coincided with the first industrial revolution; in turn, the new expansion in literacy, as well as cheaper printing, helped to nurture the----of popular literature.
(A) building.. mistrust
(B) reappearance.. display
(C) receipt.. source (D) selection.. influence
(E) emergence.. rise
2. Although ancient tools were----preserved, enough have survived to allow us to demonstrate an occasionally interrupted but generally---- progress through prehistory.
(A) partially.. noticeable
(B) superficially.. necessary
(C) unwittingly.. documented
(D) rarely.. continual
(E) needlessly.. incessant
3. In parts of the Arctic, the land grades into the landfast ice so----that you can walk off the coast and not know you are over the hidden sea.
(A) permanently (B) imperceptibly
(C) irregularly (D) precariously (E) slightly
4. Kagan maintains that an infant's reactions to its first stressful experiences are part of a natural process of development, not harbingers of childhood unhappiness or ----signs of adolescent anxiety.
(A) prophetic (B) normal