按要求写句子。

l．秦兵马俑是举世无双的珍贵历史文物。

    改写成反问句：                                                                                                                                  

2．我一不小心弄脏了李星的新衣服。

     改写成“被”字句：                                                                                                                          

3．老师不辞辛苦，用心血培育我们成长。

     改写成比喻句：                                                                                                                              

道岔表示器的显示方式有哪些？