题目内容

下面代码表示绘制半圆的是（）

A. cav.arc(150,150,80,0,Math.PI/2,true);
B. cav.arc(150,150,80,0,Math.PI,true);
C. cav.arc(150,150,80,Math.PI/2,Math.PI,true);
D. 都不是

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开始创建路径的方法是（）

A. act
B. head
C. beginPath
D. command

关于下面代码的运行效果,说法错误的是var pic=document.getElementById('pic');ctx.beginPath();ctx.drawImage(pic,500,400,88,150);

A. 该图像在画布中的起始坐标为(500,400)
B. 该图像在画布中的起始坐标为(88,150)
C. 该图像在画布中的大小为宽88,高150
D. pic指源图像。

美术教学应注重对学生审美能力的培养。

A. 对
B. 错

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