TOEFL Reading: ETS-TOEFL阅读机经 - FZ8F3J5U6528VWV0L$

Which of the following best describes the relationship of paragraph 5 to paragraph 4 A. Both paragraphs compare the effectiveness of cereal agriculture and cattle herding as food-production strategies in the sub-Saharan regions. B. Paragraph 5 challenges the ideas in paragraph 4 about the relative importance of shifting agriculture in the sub-Saharan regions. C. Both paragraphs emphasize the idea that agricultural practices south of the Sahara took a very long time to develop. D. Paragraph 5 provides further details about the practice of shifting agriculture south of the Sahara presented in paragraph 4.