“世界上的事情永远不是绝对的，结果完全因人而异。苦难对于天才是一块垫脚石，对于能干的人是一笔财富，对于弱者是一个万丈深渊。”巴尔扎克的话说明（    ）

①心理健康对于个人成长非常重要                 ②人们对挫折的承受能力各有不同

③挫折既是好事又是坏事，具有双重性         ④挫折孕育着成功

如图所示，向透明塑料袋内吹气后，将袋口扎紧，再在袋口下挂一重物，将它放入盛水的玻璃容器中，就成了一个“空气透镜”．当平行光束射到这个“空气透镜”上时，射出的激光束将成为（　　）

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根据短文，判断正误。

   My name is Mary. I am eleven. Ted is my brother. He is thirteen. We are in the same school. My mother is a teacher. She is a teacher in our school. My father is a teacher, too. He is a Chinese teacher in a college. I have a cat. Its name is Miaomiao. It is white. It is a nice cat. We are good friends.