While teaching, we should keep our class running smoothly and

While teaching, we should keep our class running smoothly and ________.

thoroughly

efficiently

speedily

directly

答案及解析：本题考查副词辨析B选项，句意为“教学过程中，我们应该保持课堂活动流畅而又_______地进行”。efficiently “高效地”, 综上，B选项正确。A选项，thoroughly “彻底地”，故排除。C选项，speedily“迅速地”，故排除。D选项，directly“直接地”，故排除。故正确答案为B 项。