A study by scientists in the United States suggested that chimpanzees are more closely related to human beings than to other great apes and they should be reclassified as a part of the human family.

• 相比之下黑猩猩于与人的关系更密切，与其他类人猿之间的关系不那么密切，所以才应该与人划为一类，不是与其他两种类人猿划为一类。