Dear Mayor Glenn,

This email is about the advantages of new renewable energy sources. As you may know, 80% of the electricity for the town comes from the coal plant, which is the cause of ___(21)___ in the city. After researching new technologies, I suggest the city develop more renewable sources like ___(22)___, wind, and nuclear power. Progress in the last couple of years has made renewables better energy sources than non-renewables like coal and gas. For example, solar panels have become less ___(23)___ than coal, cheap to build, and cleaner for the environment. ___(24)___ have gotten larger, make less noise, and produce more energy with less wind. Nuclear power can sometimes be ___(25)___, but it’s cheap to run.

Question 21.
A. noise
B. pollution
C. weather
D. expense
Question 22.
A. solar
B. gas
C. oil
D. coal
Question 23.
A. advantaged
B. expensive
C. noisy
D. dangerous
Question 24.
A. Hydropower
B. Wind turbines
C. Solar panels
D. Nuclear
Question 25.
A. dangerous
B. clean
C. safe
D. exhausted