遇到一个Prep12的题有点专牛角尖看不懂,求大神帮忙。
答案是A。我理解A的正确性,可是C也很合理阿。
文章第二段写"white tigers are merely Indian tigers—a subspecies well represented in both zoos and the wild"不是证明Indian tigers more likely to survive in the wild?
White tigers are neither a species nor a subspecies, but appear as a result of a recessive trait that rarely occurs in the wild. In the 1950s many zoos deliberately and indiscriminately bredwhite tigers, but more recently, concerns about the desirability of preserving a trait that presumably hinders tigers‘ to survive in the wild, and recognition that inbreeding could lead to genetic defects, have caused most 2005 to such practices. However, some 200 managers argue that the popularity of white tigers provides income important to the survival of zoo sponsored scientific and conservation programs. They also point out that most of the white tigers captured in the wild were adults, proving that their coloration does not hinder their survival ability. Opponents of white-tiger breeding programs argue that white tigers are merely Indian tigers—a subspecies well represented in both zoos and the wild—and that zoos should focustheir tiger management efforts on preserving subspecies whose existence is threatened, thus preventing the Chinese and Indochinese tiger subspecies from joining the Javan, Balinese,and Caspian subspecies in extinction. Alternatively, zoos could mingle the subspecies and manage all tigers in captivity as one species. Although subspecies differences would be lost,this strategy would be advantageous because fewer animals would be necessary to maintain the genetic diversity of tigers in captivity, making scarce zoo resources available for housingother endangered felines.
The passage suggests that, compared with other tiger subspecies, the Indian tiger is
- A
less threatened by extinction
- B
less readily bred in captivity less
- C
likely to survive in the wild
- D
more likely to be bred indiscriminately
- E
more popular with 200 visitors
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