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SUN ENERGY IS NOT ONLY PLENTIFUL AND INFINITE BUT...
SUN ENERGY IS NOT ONLY PLENTIFUL AND INFINITE BUT ALSO CLEAN AND S...
DE THI HOC KI 2 THAM KHAO
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12. Sun energy is not only plentiful and infinite but also clean and safe.
A. sources B. fuels C. gases D. power
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12.
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DE THI HOC KI 2 THAM KHAO