【简答题】阅读理解 Jim is a little boy. He is only five years old. He isn't at school. He can't read or write. But his sister Kate is a student. She is thir. She is at school. She can read and write. Sh...
【判断题】如果算符 作用于 结果为 ,则 是 的本征值, 为 算符对应 的本征函数
【单选题】He is the only student ____ plays table tennis better than Jim.
【单选题】He is the only student plays table tennis better than Jim. [ ]
【简答题】阅读理解,回答问题。 Jim is a boy. He is from Canada. He is nine years old. He is a primary school student(小学生). He can speak Chinese and English. He likes to play football. He is a good student. He is a Young ...