以下是一篇历次考试的托福满分作文，大家可以通过这些范文来了解托福写作的题目类型、托福作文中的高分句式和词汇，然后有针对性地提升自己的托福写作能力，希望对大家的作文复习有所帮助。
New findings in scientific areas can examine and challengeprevious assumptions. A recent finding concerning the meerkat,a burrow-dwelling animal in the African grasslands, has castdoubt upon the conventional ideas of altruism, the type ofbehavior in which an animal sacrifices its own interests for thebenefit of another.
Meerkats were previously thought to be a typical altruisticanimal. 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 andsuccessfully after raising an alarm.
However, in the new findings, it's shown that the sentinel meerkat has already eaten food beforestanding guard, thus contradicting the thought that it has an empty belly while on the lookout. Inaddition to this, the sentinel is the first to see a predator, so it is the first to escape. It is also placednearest a burrow, making it relatively easier to flee. Moreover, its alarm calls may cause the groupeither to gather or to spread rapidly, which may attract the predator's attention, providing thesentinel a better chance to escape.
The same is with supposed human altruistic behavior. Organ donation to strangers may beconsidered an unselfish act, which provides little reward to the donator. However, by donating hisorgan, the donator may most probably receive praise and appreciation from others. Isn't this non-material reward, which increases one's self worth, satisfactory to anyone?
新托福满分作文范例如上，希望能够给大家提供一些托福考试的备考方向，大家一定可以从范文中学到很多对自己作文提高有所帮助的东西。
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