turn off that_program,now that they're in a place like Tsavo. “They're hardwired to grow a mane,and they'll develop as large a mane as they possibly can. ”
Scientist Roland Kays of the New York State Museum in Albany says he is surprised by the delay in mane development. However,he expresses concern about the accuracy of using field observations to judge the age of Tsavo lions. Gnoske says his team is now focusing its research on Tsavo lions with known birth dates,but it will be a challenge to keep track of the wideranging animals,especially since radio collars are prohibited in Tsavo's national parks.
40.What does the passage mainly talk about?
A.Studies on relationships between lions and climates.
B.Arguments on why the male lion lost its mane.
C.Comparisons of lions in Tsavo and Serengeti.
D.Different ways of studying manelessness of male lions.
答案 B [细节理解题。由第一段内容可知。]
41.Gnoske did fieldwork in Serengeti mainly because ________.
A.it has a much lower temperature
B.lions in Serengeti grow a full mane in 5 years
C.it is easier to make sure of the accuracy of field observation
D.lions in Serengeti grow a full mane when they are ready to be parents
答案 A [细节理解题。由第三段内容可知。]
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