问题
选择题
What's the next number? 1, 2, 4, 7, 11, 16, ___________[ ]
A. 22
B. 20
C. 18
答案
答案：A
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What's the next number? 1, 2, 4, 7, 11, 16, ___________[ ]
A. 22
B. 20
C. 18
答案：A