基础题
基础题：
题干：What is the main idea of the passage?
选项：A. The history of coffee. B. The health benefits of coffee. C. How to brew coffee. D. The global coffee market.
原文首段提到咖啡起源，中间段落详述其提神、抗氧化等健康益处，末段总结其日常价值。
解答：选B。首段为引入，中间主体部分聚焦健康益处，末段总结，故主旨为B。
变式题：
题干：What can be inferred from the second paragraph?
选项：A. The author dislikes the new policy. B. The new policy is controversial. C. The new policy has no effect. D. The new policy is universally accepted.
原文第二段提到“Some experts praised it, while others raised concerns about its implementation.”
解答：选B。原文提到专家有褒有贬，说明存在争议（controversial），A、C、D均过于绝对或与原文不符。