面对新颖的数学考题,不少同学苦思冥想而难以入手,这时,如果我们能及时改变思维方向,找到破解疑难的切入点,就能在山重水复中看到柳暗花明. In the face of novel mathematics exam questions, many students are struggling to contemplate and difficult to get started. At this time, if we can change our thinking direction in time and find the entry point for solving difficult problems, we will be able to see the obscure in the mountains.