[单项选择]According to the author, the most important social factor in purchasing process is
A. reference groups.
B. social classes.
C. culture.

[填空题](S1) According to the author, the most important quality for learning a language well is________.

[单项选择]According to the author, the most active advocates of telecities are______.
A. leaders and planners
B. urban architects
C. some corporations
D. government administrators

[单项选择]One of the most important social developments that helped to make possible a shift in thinking about the r01e of public education was the effect of the baby boom of the 1950s and 1960s on the schools. In the 1920s, but especially in the Depression conditions of the 1930s, the United States experienced a declining birth rate—every thousand women aged fifteen to forty-four gave birth to about 118 live children in 1920, 89.2 in 1930, 75.8 in 1936, and 80 in 1940. With the growing prosperity brought on by the Second World War and the economic boom that followed it, young people married and established households earlier and began to raise larger families than had their predecessors during the Depression. Birth rates rose to 102 per thousand in 1946, 106.2 in 1950, and 118 in 1955. Although economics was probably the most important determinant, it is not the only explanation for the baby boom. The increased value placed on the idea of the family also helps to explain this rise in birth rate
A. Economy.
B. Public education.
C. Family.
D. Earlier marriage.

[填空题]

One of the most important social developments (31) helped to make possible a shift in thinking about the role of public education was the effect of the (32) boom of the 1950s and 1960s on the schools. In the 1920s, but (33) in the Depression conditions of the 1930s, the United States experienced a declining birthrate — every thousand women aged fifteen (34) forty-four gave birth to about 118 live children in 1920, 89.2 in 1930, 75.8 in 1936, and 80 in 1940. (35) the growing prosperity brought on by the World War Ⅱ and the economic boom that (36) it, young people married and established households earlier and began to (37) larger families than had their predecessors during the Depression. Birth (38) rose to 102 per thousand in 1946, 106.2 in 1950, and 118 in 1955. Although economics was probably the most important determinant, it is not the only explanation for the baby boom. The increased value placed <