【问题】What has made it difficult to survey lions in remote parts of Susan and Ethiopia？
原文：Continuous fighting in the region has made survey difficult.
这篇新闻研究者们证实非洲的狮子正在大范围消失,并成立小组研究狮子的栖息地。这道题难度中等,通过视听一致即可。

【问题】 What was the main purpose of the research?
细节题。目的题，按照顺序中段听到了the discovery of the lost lions内容，以及catch images… / identify lions’tracks，确定答案。

【问题】What did the researchers find in the national park?
细节题。视听一致原则，依据identify lions’tracks, 确定答案

原文：

Lions have disappeared from much of Africa, but for the past few years scientists have wondered if the big cats were hanging on in remote parts of Sudan and Ethiopia. Continuous fighting in the region has made surveys difficult. But scientists released a report Monday documenting, with hard evidence, the discovery of "lost lions."
A team with Oxford University’s Wildlife Conservation Research Unit, supported by a charity organization, spent two nights in November camping in the National Park in northwest Ethiopia, on the Ethiopia-Sudan border. The researchers set out six camera traps capturing images of lions, and they identified lion tracks.
The scientists concluded that lions are also likely to live in the neighbouring National Park across the border in Sudan. The International Union for Conservation of Nature had previously considered the area a "possible range" for the species, and local people had reported seeing lions in the area, but no one presented convincing evidence.