A.transition
B.transaction
C.transmission
D.transformation

A.uncommon
B.disordered
C.abnormal
D.extraordinary
A.avoiding any observation.
B.finding a safe shelter.
C.giving a warning threat.
D.starting a quick attack.
A.the snakes combine all the previous three steps.
B.the snakes give up all the previous three steps.
C.the snakes follow all the previous steps one by one.
D.the snakes reverse the order of all the previous steps.