問題詳情
【題組】75. My family has had a solar panel installed on the roof of our house to harness the sun’s raysfor self-s_____cy in electricity. That is, we no longer have to rely on the power company forthe energy supply.
參考答案
答案：C
難度：簡單0.898961
統計：A(12),B(232),C(2509),D(38),E(0)
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