If you follow a diet expert’s advice, eating more can mean losing _____weight rather than less.

A．heavier

B．lower

C．lighter

D．more

设有定义：float a=2,b=4,h=3;,以下C语言表达式与代数式1/2(a+b) 计算结果不相符的是（ ）。

A．(a+b)*h/2

B．(1/2)*(a+b)*h

C．(a+b)*h*1/2

D．h/2*(a+b)