下面哪个饼图可以解释赫佩尔的发现？
Which of the following pie chart can explain Heppel's discovery?
赫佩尔教授在其网站上就如何施行“赤脚”政策，给学校提供了各种建议。
On his website, Prof Heppel offers advice to schools on how to implement 'a shoeless' policy.
所有的托尔门·托索葡萄酒源于佩德·贝赫·帕尔地区的无灌溉葡萄园。
The Tormentoso wines are all sourced from dry-farmed (un-irrigated) vineyards in the Perdeberg region of Paarl.
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