第3题: [单项选择]The ship's generator broke down, and the pumps had to be operated ______ instead of mechanically. A. automatically B. artificially C. superficially D. manually 参考答案:D 答案解析:副词辨析题。manually意为“用手,手工地”;automatically意为“自动地,机械地”;artificially意为“人工地,非天然地”;superficially“表面地,肤浅地,浅薄地