Brazil now ranks ______ in the world in carbon emissions, and most of its emissions come from deforestation.
A. fourth
B. third
C. second
D. first
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With large amounts of money from governments and big companies, this ______ pursuit of bio-fuels is threatening the whole world.
A. depressing
B. desperate
C. disgusting
D. promising
The ______ to staying in that dead-end job is to quit.
A. choice
B. change
C. arrange
D. alternative
Politicians and big companies believe ______ are alternative sources of energy
A. solar energy
B. wind power
C. farm-grown fuels
D. dark fuels
Brazil is the world’s second largest producer of ______.
A. biofuel
B. fossil fuel
C. corn fuel
D. ethanol fuel