According to Numan, context can be classified into . A: linguistic context and co-text. B: nonlinguistic context and extra-linguistic context. C: situational context and cultural context D: linguistic context and nonlinguistic context.

canvas中二维绘图环境对象获取的语句是哪项？假设canvas为获取的canvas对象名。 A: var ctx=canvas.getContext("2d"); B: var canvas=document.getElementById("myCanvas"); C: var ctx=canvas.getContext("WebGL"); D: var ctx=canvas.getElementById("2d");

创建canvas画布使用的方法是（）。 A: getContent（"3d"） B: document.Context（"3d"） C: getContext（"2d"） D: document.Context（"2d"）

How to narrow the following topic “The Effects of Deforestation on Gorillas in Africa ” A: Geographical context B: Historical context C: Biological context D: Social context

平移坐标系到canvas的中心位置，用下列哪个Canvas方法来实现？绘图环境对象为context。 A: context.translate(canvas.width/2,canvas.height/2); B: context.transform(canvas.width/2,canvas.height/2); C: context.transfer(canvas.width/2,canvas.height/2); D: context.translation(canvas.width/2,canvas.height/2);