A．It is totally based on Smiley's long­term notes.

　　B．Scientists have to rely on more personal data.

　　C．Climate change affects birds' migration time.

　　D．It contributes greatly to other personal research.

　　C　解析：细节理解题。根据第五段的内容尤其是最后一句"Her results suggest that they do．"可知，Napoli的研究说明气候的变化影响鸟类的迁徙时间，故C项正确。

　　B

　　(2019·河南豫北名校质量评估)Kazakhstan announced plans to bring wild tigers back to their historical range in the Ili­Balkhash region, and signed an agreement with World Wide Fund for Nature(WWF) to conduct a tiger reintroduction program. "It will not only bring wild tigers back to their ancestral home, but also protect the unique ecosystem of the Ili­Balkhash region，" said Askar Myrzakhmetov, the Minister of Agriculture of the Republic of Kazakhstan.

　　If successful, Kazakhstan will be the first country in the world to bring wild tigers back to an entire region where they have died out for nearly half a century. Tiger reintroduction projects have only been achieved within national borders and in areas that are considered current tiger habitats(栖息地). Kazakhstan's tiger reintroduction program is unique and it desperately requires the restoration of a vast forest that is part of the wild tiger's historical range.

　　Since the beginning of the 20th century, wild tigers have lost over 90 per cent of their historical range. Wild tigers have completely disappeared from the region since the late 1940s, due to the loss of habitat. To prepare for the return of wild tigers, on 1st January 2018 Kazakhstan set up a new nature reserve in the southwestern Ili­Balkhash, in order to restore the unique forest habitat. This will include the protection of existing wildlife, and reintroducing important prey(猎物), such as the endangered wild Bactrian deer.

　　Restoring tigers will also help protect Lake Balkhash and prevent it from repeating the fate of the Aral Sea, formerly the world's fourth largest lake and now 10 per cent of its original size. "The hard work remains ahead of us. We have to spare no effort to make this region ready for tigers and involve all stakeholders(利益相关者) to make this happen. That means dealing with illegal activities, having these people who govern parks be well­trained and equipped, increasing prey populations and involving local communities，" said Ekaterina Vorobyeva, Director of the WWF program.

　　【解题导语】　本文是一篇说明文。哈萨克斯坦通过与世界自然基金会签订协议以及设立新的自然保护区等举措开启野生老虎重新引入项目。

5．What is Askar Myrzakhmetov's attitude toward the tiger reintroduction program?