单项选择题
A.dominates B.originates C.terminates D.fascinates
Eventually chemical changes（）the generation of petroleu...
单项选择题Eventually chemical changes（）the generation of petroleum.
A.hand in B.give in C.take in D.result in
As time goes on the organic material is buried deeper a...
单项选择题As time goes on the organic material is buried deeper and hence（）higher temperatures and pressures.
A.is made up of B.is absorbed in C.is exposed to D.is known as
Petroleum is a result of the（）of plant or animal matter...
单项选择题Petroleum is a result of the（）of plant or animal matter in areas which are slowly subsiding.
A.depression B.description C.destruction D.deposition
