<閱讀測驗>[題組:第40題到第43題]43. According to the passage, which of the following is an advantage of Li-Fi over Wi-Fi? (A) Li-Fi can be powered by radio and save more energy. (B) Li-Fi guides pedestrians in areas where vehicles cannot travel. (C) Li-Fi provides safer transmission of data during a power failure. (D) Li-Fi can be used in areas where Wi-Fi may interfere with radar signals.
