...r , we need a mechanism in place that signals, 'Hey, stop doing that thing and do something else'." That mechanism, he suggests, could be fatigue.因为多个目标相互竞争占用我们的时间，而我们需要一个机制来发出信号，'嘿，停止做那件事，去干点别的。'”他...
... encounter reality in the form of blizzards, lightning, thirst, starvation and snakes.1. journey to come，这里的to come是journey的后置定语吧，意思是：即将到来的旅程？2. in the form of 这里是什么意思呢？
...析一下与动词时体有关的问题：Tom _____ in China
for 20 years. And now he teaches Chinese in America.A. arrived B. has arrived C. has
been D. was参考答案是C.估计是有人认为现在完成时是“因”，后面的一般现在时是“果”，所以有人靠判断前后是...
...that?FEMALE PROFESSOR: Yes, the octopus can release a cloud of ink if it feels threatened, ah but it doesn’t hide behind it, as is generally believed.FEMALE PROFESSOR: Um the ink cloud is... it serves to distract a predator while the octopus makes its escape.请问老师，这里的as是...