【单选题】【消耗次数：1】
若已定义：intm=7,n=4;floatx=3.0,y=8.0,k;则执行语句k=m/2+n*x/y;后，变量k的值是（）。
①
3
②
4
③
4.5
④
5
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若有定义：inta=7；floatx=2.5，y=4.7；则表达式x+a%3*（int）（x+y）%2/4的值是（）。
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【单选题】
若有定义：int m＝7；float x＝2.5, y＝4.7；则表达式x＋m%3*(int)(x＋y)%2/4的值是（ ）。
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