laboratory

instrument

desperation

feature

earnestly

reassuring

thoroughly

seem to （do）

urge sb.to do

part with

give an account of

be convinced that

1.I must not use a magnifying glass， nor instruments of any kind

2.Not only must I think of my fish all night， studying， without the object before me， what this unknown but most visible feature might be， but also， without reviewing my discoveries， I must give an exact account of them the next day

3.He seemed to be quite as I that I should see for myself what he saw

4.It has influenced the way I have studied ever since

5.It was something the Professor gave me， which we could not buy， with which we could not part

6.While training the students in the method of observing facts and their orderly arrangement