与原子核内部变化有关的现象是（）

给病人输液时，常用橡皮带扎紧病人的前臂，发现手上的“青筋”隆起．这些“青筋”是（　　）

阅读理解

    Every country has its favourite food. In some countries, people(人们) eat rice every day. They often eat it with meat, fish and vegetables.       

   Japanese(日本人) eat a lot of fish, and they eat a lot of rice, too. In England(英国), the favourite food is fried fish and French fries. In the USA(美国) people like hamburgers a lot. And they like to have cold drinks. In Canada, people eat bread with butter(黄油) on it. In India, people like to eat hot food. Some people eat only fruit and vegetables. They don't like to eat meat and fish. They think green food is good for them.

2016年度感动中国人物支月英，19岁时远离家乡只身来到偏远山村，坚守讲台36年，忘记自我，以孱弱身躯为山村孩子遮风挡雨，教育了大山深处两代人。从支月英身上我们可以学习的优秀品质有（  ）

①爱岗敬业、无私奉献

②艰苦奋斗

③扎实、渊博的知识

④宽容慎独