题目内容
Given a,b,c are positive integers,and a,b are prime numbers,
,then the value of
is( )
A.14 B.13 C.12 D. 11
(英汉词典 positive integers:正整数. prime numbers:质数)_
D
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(英汉词典:besureto确定;correct正确的;inequality不等式)
(英汉词典:besureto确定;correct正确的;inequality不等式)
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| a |
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(英汉词典acute angle:锐角;obtuse angle:钝角)
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