(1)数
(2)更
(3)登
(4)稍
答案 (1)屡次/计算/技艺/几 (2)经历(过)/另外 (3)丰收/进用 (4)微小/逐渐,渐
3.虚词归纳
(1)以
(2)于
答案 (1)连词,来/连词,因此 (2)介词,在/介词,比
4.古今异义词
(1)以别九州
古义:________________________________________________________________________
今义:________________________________________________________________________
(2)害中国也尤甚
古义:________________________________________________________________________
今义:________________________________________________________________________
(3)漕从山东西
古义:________________________________________________________________________
今义:________________________________________________________________________
(4)便于砥柱之漕
古义:________________________________________________________________________