A．He lived in New York City.

　　B．He was a scientific researcher.

　　C．He owned the Mohonk Preserve.

　　D．He kept a record of wildlife.

　　D　解析：细节理解题。根据第二段第二句"In the 1930s, Dan Smiley, a descendent of the original owners, began keeping track of the plants and animals that lived in the area．"可知，20世纪30年代，这个地区原来的主人的一个后人Dan Smiley记录了该地区的动植物信息。故D项正确。

　　2．What does the underlined word "it" in Paragraph 4 refer to?

　　A．The birds' birth.

　　B．The birds' arrival.

　　C．The nest building.

　　D．The insects' appearance.

　　B　解析：代词指代题。根据第四段第一句"It's important for the birds to arrive at the proper time in the spring, because they need to time their arrival with the insects' emergence．"可知，对于鸟类来说，在春天适时到达很重要，因为它们需要用昆虫的出现来确定它们到达的时间。又结合本段中的"Once the eggs hatch, they have their baby birds, so they need to time it when the insects are most abundant．"可知，一旦这些蛋孵化，它们就有了幼鸟，所以它们需要在昆虫数量最多的时候安排时间到达。据此可知，it指代鸟的到达，故B项正确。

　　3．What does Megan Napoli think of Smiley's long­term record?

　　A．It has affected the birds' migration.

　　B．It challenges the previous research.

　　C．It has changed official attitudes.

　　D．It is of great value to her research.

　　D　解析：细节理解题。根据第三段第二句"She thinks Smiley's efforts produced a rare long­term data set of observations, which is useful for studying the impacts of climate change．"可知，Megan Napoli认为Smiley收集的长期观测数据对研究气候变化的影响非常有用。故D项正确。

4．What can we learn from Napoli's research?