段1：①In an essay entitled “Making It in America,” the author Adam Davidson relates a joke from cotton country about just how much a modern textile mill has been automated: The average mill has only two employees today, “a man and a dog. ②The man is there to feed the dog, and the dog is there to keep the man away from the machines.”
段2：①Davidson’s article is one of a number of pieces that have recently appeared making the point that the reason we have such stubbornly high unemployment and declining middle-class incomes today is largely because of the big drop in demand because of the Great Recession, but it is also because of the advances in both globalization and the information technology revolution, which are more rapidly than ever replacing labor with machines or foreign workers.
21. The joke in Paragraph 1 is used to illustrate .
[A] the impact of technological advances
[B] the alleviation of job pressure
[C] the shrinkage of textile mills
[D] the decline of middle-class incomes
答案：A
问：21题A选项对应原文中哪部分信息？（多选题）
A : how much a modern textile mill has been automated
B : have such stubbornly high unemployment
C : the Great Recession
D : are more rapidly than ever replacing labor with machines or foreign workers
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