阿摩線上測驗
42. According to the passage, which of the following statements is NOT true about Li-Fi?
(A) It passes through concrete walls.
(B) It was first introduced in 2011.
(C) It transmits data at high speed.
(D) It may help with parenting.
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統計： A(110), B(8), C(8), D(15), E(0) #1838151
統計： A(110), B(8), C(8), D(15), E(0) #1838151
