阿摩線上測驗
15. Geothermal power plants – which tap scorching – hot underground rocks and reservoirs to generate renewable electricity – have been bit players in California’s energy landscape for decades, _____ expensive _____ compete with solar, wind and fossil fuels.
(A) so… that
(B) too… to
(C) either… or
(D) neither… nor
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統計： A(2), B(29), C(3), D(2), E(0) #3456241
統計： A(2), B(29), C(3), D(2), E(0) #3456241
