2. 外语
  3. Directions: An introductory sentence for a brief summary of the passage is provided here. Complete the summary by selecting the

Directions: An introductory sentence for a brief summary of the passage is provided here. Complete the summary by selecting the

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问题 Directions: An introductory sentence for a brief summary of the passage is provided here. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage.
Write your answer choices in the spaces where they belong. You can either write the letter of your answer choice or you can copy the sentence.
Two sociologists, Robert Park and Ernest Burgess, developed the "concentric-zone model" of how cities use land and grow.
                        Answer Choices
[A]The model was developed to explain how the city of Chicago was developing around centrally located transportation and communication systems.
[B]The model arose out of concern for the quality of life in the rapidly growing cities of early twentieth-century America.
[C]The founders of the model did not believe in formal city planning and instead advocated growth through the expansion of so-called "natural areas."
[D]According to the model, a group new to the city tends to live together near the center and over time moves to outer areas that are more diverse ethnically and occupationally.
[E]The model is applicable to cities that grow by attracting large numbers of workers to centrally located businesses.
[F]The model predicts that eventually the inner city becomes so crowded that its residents move to new satellite cities outside the city limits.
选项
答案B, D, E
解析
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