题目

（2011·湖南卷）C A recent study of ancient and modern elephants has  come up with the unexpected conclusion that the African elephant is divided into two distinct (不同的) speciesThe discovery was made by researchers at York and Harvard universities when they were examining the genetic relationship between the ancient woolly mammoth and mastodon to modern elephants—the Asian elephant, African forest elephant and African savanna elephant Once they obtained DNA sequences (序列) from two fossils (化石)，mammoths and mastodons the team compared them with DNA from modern el读两幅图，完成下列各题：（1）C点位于地球上五带中的 带，一年中太阳直射 次．（2）A点的纬度是 ，一天中，AB两点先看到太阳的是 点．（3）当太阳直射A点时，地球位于公转轨道上的 处，此时北极圈内会出现 现象．当地球位于公转轨道上的乙处时，北半球处在 季，南半球处在 季．（4）今天（1月20日），地球位于公转轨道中的 和 之间．