分析《世间最美的坟墓》中的对比手法的运用。

阅读下面的文章，根据所给的中文正确拼写单词，使文章意思完整。一空一词
   I have been in Australia for two weeks. I'm____ (过) a good time here, although I have to be ____ (诚实) and say that I ____ (更喜欢) China. I'm lucky to be here for my one- year English ____ (课程). It’s a great challenge for me. I will try my best to ____ (处理) with each of them. I used to spend too much time ____ (闲谈) with others on the Internet. Now I have ____ (意识到) I must take the chance. And I mustn't____ (浪费) time or money. Australia is the____ (六) largest country in the world and Sydney is a beautiful city, but I have no interest to go sightseeing. I'm ____ (自信) of myself I can catch up with others. I will memorize the experience in Australia.

注意：⑴短文必须包括表中所有内容，可适当增加细节：

      ⑵你的观点至少两条；

      ⑶词数：80～100；

      ⑷短文首句仅供参考，不计入总词数。

短文首句：Recently, we have discussed the ways to go traveling．

如图，在△ABC中，∠ACB=90°，AC=BC，点P是△ABC内一点，且∠APB=∠APC=135°．

（1）求证：△CPA∽△APB；
（2）试求tan∠PCB的值．