Alfred 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 different units for conservation purposes.Since 1950,all African elephants have been conserved as one species.Now that we know the forest and savanna elephants are two very distinctive animals,the forest elephant should become a bigger priority (优先)for conservation purposes.”
1.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
解析 细节理解题。由第三段第一句话“...two fossils,mammoths and mastodons...”可知D项正确。
解析 词义猜测题。科学家们一直在证明非洲森林大象和非洲草原大象是两个不同的物种,它们之间的差异使科学家们大为惊讶。
2.The underlined word “divergence” in Paragraph 4 means “________”.
A.evolution
B.exhibition
C.separation
D.examination
3.The researchers’ conclusion was based on a study of the African elephants’ ________.
A.DNA
B.height
C.weight
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