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 托福閱讀真題 Desert formation 解答(3)

(6) 3

This is a Factual Information question asking for specific information that can be found in paragraph 6. The correct answer is choice 3, “removal of the original vegetation.” Sentence 4 of this paragraph says that “the raising of most crops necessitates the prior removal of the natural vegetation, ” an explicit statement of answer choice 3. Choice 1, lack of proper irrigation techniques, is incorrect because the paragraph mentions only “overirrigation” as a cause of desertification. No irrigation “techniques” are discussed. Choices 2 and 4, failure to plant suitable crops and use of animal waste, are not discussed.

(7) 4

This is a Vocabulary question. A phrase is being tested here, and all of the answer choices are phrase. The phrase is “devoid of.” It is highlighted in the passage. “Devoid of means” without,” so the correct is choice , “Lacking in.” If you lack something that means you are without that thing.