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单项选择题
A.Lower wages.
B.Degradation of the environment.
C.Degradation of labor standards.
D.All of the above.
单项选择题
A.The teachers came to the children' s homes.
B.The children acquired the information they needed by direct experience.
C.Children were taught in small, personalized groups at home.
D.Parents would teach children the three R' s themselves.
单项选择题
A.They needed to count and calculate money.
B.They needed to read and write.
C.They needed to alert moving objects.
D.They needed to hunt and farm.
单项选择题
A.There was a new dependence on communication with people far away and the use of money.
B.The alphabet and numerical system was introduced.
C.The old methods of farming now required the use of complex machines.
D.The global economy made mass electronic communication very common.
单项选择题
A.The climate.
B.The exposure to light.
C.The length of time.
D.The fertility of the soil.
单项选择题
A.Their tings get thinner and thinner.
B.They add a ring of wood.
C.Their rings get darker in color.
D.They become more valuable.
单项选择题
A.It began 2000 years ago.
B.It began in the eighteenth century.
C.It began in the early twentieth century.
D.It began in this decade.
单项选择题
A.His writing was influenced by black music.
B.He described the Southern United States.
C.His writings were about war.
D.He wrote stream-of-consciousness style.
单项选择题
A.His writing talent was natural.
B.He was a compulsive drinker.
C.His work improved as he matured.
D.He could not adjust to a changing world.