There has long been debate in the scientific community that the two might be separate species, but this is the most convincing scientific evidence so far that they are indeed different species.

　　Previously, many naturalists believed that African savanna elephants and African forest elephants were two populations of the same species, despite the elephants' significant size differences. The savanna elephant has an average shoulder height of 3.5 metres while the forest elephant has an average shoulder double the weight of the forest elephant. But the fact that they look so different does not necessarily mean they are different species. However，the proof lay in the analysis of the DNA.

　　Alfried Roca, assistant professor in the Department of Animal Sciences at the University of Illinois, said, “We now have to treat the forest and savanna elephants as two difficult units for conservation purpose. Since 1950, all African elephants have been conserved as one species. Now that we know the forest and savanna elephants have been distinct animals, the forest elephant should become a bigger priority(优先)for conservation purposes.”

　　36．One of the fossils studied by the researchers is that of ________.

　　A．the Asian elephant

　　B．the forest elephant

　　C．the savanna elephant

　　D．the mastodon elephant

　　37．The underlined word “divergence” in Paragraph 4 means“________”．

【山东省2016届高三外研版英语单元测试Book2 Module4《Fine Arts—Western Chinese and Pop Arts》Word版含解析】相关文章：

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 5 A卷 Word版含解析

★ 2017届高考英语二轮复习书面表达限时测验：4（含解析）

★ 2014年牛津译林版高中英语总复习（第1轮）同步练习 M4《Unit 2　Sports events》

★ 2014年牛津译林版高中英语总复习（第1轮）同步练习 M1《Unit 2　Growing pains》Word版含解析

★ 2014年牛津译林版高中英语总复习（第1轮）同步练习 M11《Unit 4　The next step》Word版含解析

★ 2017届高考英语二轮复习课时训练：10（含解析）

★ 【浙江专用】2014届高考英语一轮复习课时作业(二十三)必修5Unit 3《Life in the future》

★ 2014年牛津译林版高中英语总复习（第1轮）同步练习 M10《Unit 3　Protecting ourselves》Word版含解析

★ 2014年牛津译林版高中英语总复习（第1轮）同步练习 M3《Unit 2　Language》Word版含解析

★ 【人教版】2014届高考英语一轮复习指导考点针对练：选修6 unit5《The power of nature》