First formal test at Nottingham

I had my Malaysian Studies test today
Frankly speaking, I answered the question based on my memory
luckily, I still can recall some of history facts
The exam hall is quite big
and the tables are arranged in orderly manner
The things that make me feel surprise is the way my lecturer distribute exam paper
First, we were asked to wait him outside the hall
Then, there are different version of our test paper
It is divided into 2 sets, that is set A and set B.
Students in each row will get different questions....
Wah!!! they are really outstanding
can think of this method to avoid cheating...
^^