,此时每根绳子长多少米?
A.5 B.3 C.12 D.20
27. 有一块正方形操场,边长为80米,沿场边每隔一米栽一棵树,问栽满四周
可栽多少棵树?
A.640 B.641 C.642 D.639
28. 在一本460页的书中,数字“1”在书中出现了多少次?
A.140 B.160 C.192 D.120
29. 老王住在7楼,每层楼之间楼梯级数都是16,则老王每次回家要爬多少级楼梯?
A.96 B.88 C.85 D.90
30. 甲地和乙地相距200千米,如果在1厘米等于50千米比例表的地图上,这两地之间的距 离是多少厘米?
A.4 B.40 C.20 D.100
【答案】21-25:BDDCA 26-30:BACCA
31. 3/7,5/8,5/9,( ),7/11,17/20
A.11/14 B.10/13 C.15/17 D.11/12;
32. 2,4,30,( ),346
A.126 B.127 C.128 D.129
33. ( ),1/4,1/4,3/16,1/8,5/64
A.1/16 B.0 C.1/8 D.-1/4
34. 2,8,80,( )
A.46 B.81 C.6560 D.6561
35. 1,4,3,6,5,( )
A.4 B.3 C.2 D.7
36. 14,10,3,-2,( )
A.-3 B.4 C.-4 D.-8
37. ( ),40,48,29,37,18
A.59 B.52 C.44 D.43
38. 1,2,3,( ),16,65,191
A.8 B.7 C.4 D.3
39. 2
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