阅读考试在托福考试中，是非常重要的，那么你知道即将到来的托福考试可能会考到什么吗？一起来看看2021年10月23日托福阅读考试真题预测，仅供参考，欢迎阅读。
2021年10月23日托福阅读考试真题预测
Title：Sociality in Animals
Social insects represent the high point of invertebrate evolution. Some specieslive in communities of millions， coordinating their building and foraging， their reproduction， and their offspring care. Yet sociality is found in only a few species of insects， and is rare among vertebrates as well： wildebeest （large antelope）and lions are the exception rather than the rule. Nearly all fish， amphibians， reptiles， birds， and mammals are solitary， except when courting and mating. Birds and mammals usually rear their young， but year-round family groups are almost unknown， though they are intensely studied where they do exist. The same is true for insects.
We know， or think we know， that social groups are good. Wolves are better predators when they hunt in packs， and pigeons escape from falcons far more often when feeding in flocks. Group building projects—the dams beavers build to block a body of water that provides them with relative safety from predators and the lodges they build for shelter， for instance—can provide a high level of protection and comfort. Why， then， are social species so very rare？ In fact， living socially presents inevitable problems that transcend habitat needs so that only when these costs are offset by corresponding benefits is group li...
