题目

The programme (瞄向) improving the health of women of all ages.(target) 答案：【1】is targeted at14．函数y=$\sqrt{2x+1}$+$\sqrt{3-4x}$的定义域为（　　）A．$（-\frac{1}{2}，\frac{3}{4}）$B．$[{-\frac{1}{2}，\frac{3}{4}}]$C．$（-∞，\frac{1}{2}]$D．$（-\frac{1}{2}，0）∪（0，+∞）$