A、fossil fuels
B、newer fuels
C、newer energy
D、--
A、fossil fuels
B、newer fuels
C、newer energy
D、--
What is the specific feature of fossil fuels?
A.They are colorless.
B.They are odorless.
C.They are rich in carbon.
D.They are easy to freeze.
Global warming results from the burning offossil fuels, such as petroleum products, resulting in the release of greenhouse gases into the atmosphere.
A.Y
B.N
C.NG
A、a phenomenon that most scientists agree is caused by human beings in buring fossil fuels
B、a phenomenon that most scientists agree is caused by fossil fuels burned by human beings
C、a phenomenon that most scientists agree is caused by human beings’ buring of fossil fuels
D、a phenomenon that is caused by fossil fuels burned by human beings
This passage is primarily about______.
A.the greenhouse effect
B.the burning of fossil fuels
C.the potential effect of air pollution
D.the likelihood of a new ice age
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