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.”
本文讲述了一项新的科学发现:通过对非洲森林大象和非洲草原大象DNA的鉴定,科学家们得出结论:它们是两种不同的物种。我们要保护这些珍稀动物。
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
答案:D。细节理解题。由第3段第一句话“...two fossils,mammoths and mastodons...”可知D项正确。
.The underlined word “divergence”in Paragraph 4 means “________ ”.
A.evolution
B.exhibition
C.separation
D.examination
答案:C。词义猜测题。科学家门一直在证明非洲森林大象和非洲草原大象是两种不同的物种,他们之间的分歧使科学家们大为惊讶。
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