题库 蓝桥杯青少组题库 题目列表 A group of children riding on bicyclesand tricycle...
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A group of children riding on bicyclesand tricycles rode past Uncle Ben's house. The son of Uncle Ben counted 7children and 19 wheels. How many tricycles were there (   )

A.

2

B.

4

C.

5

D.

6

题目信息
科技素养组 第十二届 STEMA 其他
20%
正确率
0
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