[解析]
(1)细节理解题。根据第三段The results showed that two thirds of conservation trials either improved biodiversity—the variety of wildlife in an area or slowed down its decline(减少).(结果显示,三分之二的保护试验要么改善了生物多样性﹣﹣﹣一个地区的野生动物种类,要么减缓了其衰退。)可知,大多数的保护试验是成功的。故选A。
(2)推理判断题。根据第四段Breeding (繁育) certain species and then freeing them into the wild,such as Chinook salmon and Cuban crocodiles,was also a successful conservation method.(繁育某些物种并将其放归野外,例如奇努克鲑鱼和古巴鳄鱼,也是成功的保护方法。)和The sea horse population actually fell because the protected waters attracted meat﹣ eaters,such as octopuses,but the octopus population increased.(海马的数量实际上下降了,因为受保护的水域吸引了肉食动物,如章鱼,但章鱼的数量却增加了。)可知,作者通过提供具体的成功实例来展开段落。故选A。
(3)推理判断题。根据最后一段Although the study was global,there was less focus on Central and South America,Southeast Asia and parts of Africa,where there is less money for research.For the next stage of the study,the plan is to include more regions.(尽管这项研究是全球性的,但对中美洲和南美洲、东南亚以及部分非洲地区的关注较少,因为这些地方的研究资金较少。在研究的下一阶段,计划将更多地区纳入其中。)可推知,该项目将在更广泛的领域进行。故选D项。
(4)标题归纳题。根据第一段Conservationists (保护主义者) received good news recently after a big research project found that wildlife conservation projects are really effective.(保护主义者最近收到了好消息,因为一项大型研究项目发现野生动物保护项目确实非常有效。)和结合文章的主要内容可知,文章主要讨论了保护项目的有效性以及生物多样性的恢复,最能体现文章主题的标题是B项Conservation Projects Are Working.(保护项目正在起作用)。故选B。