单项选择题
Eventually chemical changes（）the generation of petroleum.
A.hand in
B.give in
C.take in
D.result in
点击查看答案&解析
相关考题
-
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 -
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 -
单项选择题
They do this by doing well-informed about their subjects, being honest in what they say, by using sound evidence, and by employing（）reasoning.
A.valley
B.value
C.vary
D.valid
