<p><span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">在教学中,教师要做好必要的引导与示范,注重计算方法研究.</span></p>