18. The Trident Underwater Drone, designed by California-based manufacturer, __________ users to pilot an underwater
remotely-operated vehicle down to depths of 100m.
(A) which allowing
(B) allows
(C) that allows
(D) allowing
詳解 (共 2 筆)
未解鎖
缺少動詞，又主詞為The Trident...
未解鎖
這題陷阱啊～雙逗號為補述中間東西刪掉不影...
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