单选题:According to the last paragraph, what is NOT true of superco

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题目内容:
According to the last paragraph, what is NOT true of superconductors? A.The United States loses great amounts of electricity using superconductor
B.Superconductors waste less power due to their low resistanc
C.Other cities hope they can use superconducting cables soo
D.Other cities hope they can also conserve powe
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