20世纪70年代，科学家利用小鼠进行了体内转化实验，探究遗传物质．

请回答下列相关问题：

（1）这是格里菲斯所做的肺炎双球菌____（“体内”或“体外”）转化实验，该实验1、实验2、实验3都是实验4的____实验．

（2）除了用上述注射法，通过观察被注射小鼠的生活情况来判断R型和S型细菌外，还可以通过显微镜观察菌体是否有____ ，或用培养基培养观察____ 的方法来区别它们．

（3）该实验获得的结论是____ ．

（4）一段时间后，再给实验3中的小鼠注射活的S型细菌，请预测该小鼠是否存活？____；并分析其原因：____ 

      阅读下面这首古诗，回答两题。
                                                                                           冷香菊
                                                                                          宋.陈荣卿
                                                                         晚秋风紧晓霜严,香阵飘飘透竹帘。
                                                                          荒仅幽林甘冷落,肯于人世学趋炎。、

①惹不起躲得起              ②报告老师或者报警

③纠集朋友实施报复      ④用法律保护自己的合法权益

   There are four seasons in a year. They are spring, summer, autumn and winter. For all my friends, every season is good.

   Wang Dong likes flying kites and climbing hills. She says when spring comes, the days are getting warmer and longer. And everything begins to grow. The wind is not very strong. It’s the best time to fly kites. And when you climb the hills, you can enjoy yourself. So she often says spring is her favourite season.

   “Swimming is my favourite sport,”says Anne. “When summer comes, I often go swimming in the rivers or lakes with my friends. ”You can enjoy yourself in the water. And you can swim like a fish there.

   “I often go climbing hills with my father during the long vacation of the National Day, ”says Liu An. “My father often tells me that I can see lots of beautiful things if I stand on the top of a hill. ”So he likes autumn best of all.

   Bob says he likes winter very much. He says, “I’m very happy when I am playing with snow.”He is making a snowman now.