是berkeley的统计概论题

加州大学伯克利分校

change one's mind是短语动词,固定结构
change one's attitude是动词短语,一般要加to+n 语义才完整,对---态度变了

change his mind ：改变他的想法
change his attitude：改变他的态度
我要改变的是他的思想、想法,而不是他的态度．

When I entered Berkeley, I hoped to earn a scholarship. Having been a Straight-A student, I believed I could take tough subjects and really learn something. One such course was World Literature given by Professor Jayne. I was extremely interested in the ideas he presented in class. When I took the first exam, I was shocked to find a 77, C-plus, on my test paper, for English was my best subject. I went to Professor Jayne, who listened to my arguments but remained unmoved . I decided to try harder, although I didn’t know what that meant because school had always been easy for me. I read the books more carefully, but got another 77. Again, I reasoned with Professor Jayne. Again, he listened patiently but wouldn’t change his mind . One more test before the final exam. One more chance to improve my grade. So I redoubled my efforts and, for the first time learned The meaning of the word “thorough”. But my effort did no good and everything went as before. The last hurdle was the final. No matter what grade I got, it wouldn’t cancel three C-pluses. I might as well kiss the scholarship goodbye. I stopped working head. I felt I knew the course material as well as I ever would. The night before the final, I even trested myself to a movie. The next day I decided for once I’d have fun with a test. A week later, I was surprised to find I got an A. I hurried into professor Jayne’s office. He seemed to be expecting me. “If I gave you the As you expected , you wouldn’t continue to work as hard.” I stared at him. realizing That his analysis and strategy were correct. I had worked my head off , as I had never done before. I was speechless when my course grade arrived: A-plus. It was the only A-plus given. The next year I received my scholarship. I’ve always remembered Professor Jayne’s lesson: you alone must set your own standard of excellence.

They are optical realizations of the Kronig-Penney model of solid state physics,and thus analogous to crystalline solids possessing band gaps,as well as to superlattices.Our dielectric mirror has an (HL) H structure,where H represents titanium oxide (with an index of 2.22) and L represents fused silica (with an index of 1.41).Its total thickness d is 1 1 pm,implying a traversal time of d/c =3.6 fs if a particle were to travel at c.Its band gap extends approximately from 600 to 800 nm,and the transmission reaches a minimum of 1% at 692 nm.
自己看吧.不知道你说的是不是这个实验.