解释下列句中加粗的词。
(1)惩山北之塞________________________________________
(2)河阳之北________________________________________
(3)曾不能损魁父之丘________________________________________
(4)寒暑易节________________________________________
(5)何苦而不平________________________________________
(6)命夸娥氏二子负二山________________________________________
(7)无陇断焉________________________________________
(8)箕畚运于渤海之尾________________________________________
(9)始龀，跳往助之________________________________________
(10)帝感其诚________________________________________
