【名词&注释】
等差数列(arithmetic progression)、绝对值(absolute value)、第三项(the third item)
[单选题]7/3,21/5,49/8,131/13,337/21,()
A. 885/34
B. 887/34
C. 887/33
D. 889/3
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[单选题]1,3,3,5,7,9,13,15(),()
A. A:19,21
B. B:19,23
C. C:21,23
D. D:27,30
[单选题]1,2,3,7,16,()
A. 66
B. 65
C. 64
D. 63
[单选题]2,-1,-1/2,-1/4,1/8,()
A. -1/10
B. -1/12
C. 1/16
D. -1/14
[单选题]-1/7,1/7,1/8,-1/4,-1/9,1/3,1/10,()
A. -2/5
B. 2/5
C. 1/12
D. 5/8
[单选题]3/7,5/8,5/9,8/11,7/11,()
A. 11/14
B. 10/13
C. 15/17
D. 11/12
[单选题]6,7,19,33,71,()
A. A、127
B. B、130
C. C、137
D. D、140
[单选题]2,33,45,58,()
A. 49
B. 59
C. 64
D. 612
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