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 托福閱讀真題 Desert formation 解答(2)

(4) 1

This is a Factual Information question asking for specific information that can be found in paragraph 5. The correct answer is choice 1: border areas have difficulty ”adjusting to stresses created by settlement. ” The paragraph says that “expanding populations,” or settlement, subject border areas to “pressures,” or stress, that the land may not ”be able to respond to.” Choice 2 is incorrect because the paragraph does not discuss ”fertility” after desertification. Choice 3 is also incorrect because “irrigation” is not mentioned here. The paragraph mentions “increasing populations” but not the difficulty of “attracting populations,” so choice 4 is incorrect.

(5) 4

This is a Vocabulary question. The word being tested is progressively. It is highlighted in the passage. The correct answer is choice 4, “increasingly.” Progressively as it is used here means “more,” and “more” of something means that it is increasing.