Of course I only know a little about my specialty,Optical Information.I almost don't know anything about communications engineering.It is like a stranger for me.I tried my best to know more about it,but still,I just know a very little.I am still not familiar with its principles.I am very annoyed.But there will be more things new for me to learn.Can I learn them well?I hope so,but I am not sure.I am annoyed and very worried,because I have done something bad,though I hope I could do well in it.

The next is OE.I can understand the script better than CE,of course.But I am still very worried whether what I know about it is enough for me to learn it well.Rflection,refraction,wave's equations...does it make any sense that I know them?What can I use them to do?I am still very confusing.

Actually,I know nothing.I do not know what I can do.

Nothing goes well for me,because I know nothing.