单项选择题

Regarded as a kind of art form, toys ______.

A．follow a direct line of ascent
B．also appeal greatly to adults
C．are not characterized by technological progress
D．reflect the pace of social progress
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单项选择题
One aspect of the universality of toys lies in the fact that ______.
A．technological advances have greatly improved the durability of toys
B．the improvement of craftsmanship in making toys depends on the efforts of universities
C．the exploration of the universe has led to the creation of new kinds of toys
D．the basic characteristics of toys are the same over the world
单项选择题
The author's purpose in writing this article is to ______.
A．describe the new pattern of American eating
B．show why the fast food industry has been growing fast
C．list the most popular fast foods
D．present some facts and guidelines to help consumers choose wisely from the fast foods available
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