下面澳际小编为大家整理了一篇关于Meerkats的SAT写作素材，大家可以在备考自己的SAT写作考试的时候多整理一些SAT作文素材，好的SAT写作材料会帮助我们得高分。

　　New findings in scientific areas can examine and challenge previous assumptions. A recent finding concerning the meerkat, a burrow-dwelling animal in the African grasslands, has cast doubt upon the conventional ideas of altruism, the type of behavior in which an animal sacrifices its own interests for the benit of another.

　　Meerkats were previously thought to be a typical altruistic animal. When the other meerkats feed, there is usually one meerkat watching out for predators. The sentinel meerkat gains nothing, it seems, for it can neither eat nor escape quickly and successfully after raising an alarm.

　　However, in the new findings, it&aposs shown that the sentinel meerkat has already eaten food bore standing guard, thus contradicting the thought that it has an empty belly while on the lookout. In addition to this, the sentinel is the first to see a predator, so it is the first to escape. It is also placed nearest a burrow, making it relatively easier to flee. Moreover, its alarm calls may cause the group either to gather or to spread rapidly, which may attract the predator&aposs attention, providing the sentinel a better chance to escape.

　　The same is with supposed human altruistic behavior. Organ donation to strangers may be considered an unselfish act, which provides little reward to the donator. However, by donating his organ, the donator may most probably receive praise and appreciation from others. Isn&apost this non-material reward, which increases one&aposs self worth, satisfactory to anyone?

　　以上就是关于Meerkats的SAT写作素材。SAT写作考试的时间短，但是要求却很严，大家在备考SAT写作考试的时候，大家可以根据自己的实际情况，对SAT作文素材进行不同程度的准备，以便丰富自己的SAT写作材料，对考试有更加全面的应对。

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