However, although polar bears’ locomotion is similarly inefficient, polar bear cubs walk along with their mother.
Furthermore, the daily movements of sloth bears and American black bears which are similar in size to sloth bears and have similar-sized home ranges reveal similar travel rates and distances, suggesting that if black bear cubs are able to keep up with their mother, so too should sloth bear cubs.
GWD6-Q11:
Which of the following, if true, would most weaken the author’s argument in lines 18-26 (“Furthermore … sloth bear cubs”)?
A. Cub-carrying behavior has been observed in many non-myrmecophagous mammals.
B. Many of the largest myrmecophagous mammals do not typically exhibit cub-carrying behavior.
C. Some sloth bears have home ranges that are smaller in size than the average home ranges of black bears.
D. The locomotion of black bears is significantly more efficient than the locomotion of sloth bears.
E. The habitat of black bears consists of terrain that is significantly more varied than that of the habitat of sloth bears作者: coldlee 时间: 2010-5-21 10:27
答案是D，我想选E，前面不是说了polar bears’ locomotion is similarly inefficient嘛作者: Tinti 时间: 2010-5-21 10:50
