問題詳情
【題組】72.
(A) Introduced
(B) Introducing
(C) To introduce
(D) To be introduced
參考答案
答案：A
難度：適中0.462658
統計：A(477),B(281),C(89),D(184),E(0)
用户評論
【用戶】Liz
【年級】大一上
【評論內容】72 to the public in 2011, Li-Fi is much faster than Wi-Fi.
【用戶】Liz
【年級】大一上
【評論內容】72 to the public in 2011, Li-Fi is much faster than Wi-Fi.