设集合 $M=\left\{x\left|0<x<4\right.\right\},N=\left\{x\left|\frac{1}{3}\le x\le 5\right.\right\}$ ，则 $M\cap N=$ （    ）

A．	$\left\{x\left|0<x\le \frac{1}{3}\right.\right\}$	B．	$\left\{x\left|\frac{1}{3}\le x<4\right.\right\}$
C．	$\left\{x\left|4\le x<5\right.\right\}$	D．	$\left\{x\left|0<x\le 5\right.\right\}$