题目

No matter how bright a talker you are, there are times when it's better silent. A . remain B . be remaining C . having remained D . to remain 答案：D某日甲地（38°N  98°E）昼长11时20分，乙地（28°N  102°E）昼长11时40分。某人上午11时乘飞机从甲地到乙地参观，途中飞行3小时。该日此人经历的昼长为A.11时40分B.14时30分民C.11时30分D.11时14分