What has hands but no feet, a face but no eyes, can tell you something, make you wake up but does not talk?
对于这类文字题,我应该抓住题干中的一些关键信息词展开想象、推理,寻找突破口.根据本题的前部分很难猜出,但如果我抓住make you wake up这一关键信息,就想到了：A clock.
From what number can you take half and leave nothing?
如果按正常思维肯定是解不出,leave nothing不就是0吗?8拦腰去一半不正好是0吗?
