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单选题
When a positive integer p is divided by 7, the remainder is 2. Which of the following expressions will yield a remainder of 4 when divided by 7?
A
p+2
B
p+3
C
p+4
D
p+5
E
p+6.
参考答案
参考解析
解析：
根据题干给出的条件,可知p为9满足。将p代入A中选项，p+2=11，被7除时余4，所以A符合。
根据题干给出的条件,可知p为9满足。将p代入A中选项，p+2=11，被7除时余4，所以A符合。
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