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【单选题】
若x,y均是int型变量,则执行以下语句的结果是( ) for(x=1;x<5;x+=2) { for(y=1; y<5; y++) cout< <<" "; }
A.
1 2 3 4 3 6 9 12
B.
2 3 4 5 6 9 12 15
C.
2 3 4 6 9 6 9 12
D.
2 3 4 10 15 20
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