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【单选题】
HTML5中关于canvas说法错误的是（）。
A.
canvas标签本身只提供定义画布的功能
B.
可以用如下格式先定义画布 浏览器不支持画布
C.
进行canvas绘图，需要结合js实现
D.
canvas标签既提供定义画布，也可以通过其属性，完成绘图功能
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B.
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C.
丙国可以通过实行计划生育,控制人口数量来缓解该问题
D.
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相关题目：
【单选题】下列说法正确的是( )
A.
预测到2050年,该人口问题最严重的国家为甲国
B.
1970年乙国老龄人口比重最小,但上升速度最快
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【简答题】Read the article and choose the best answer to each question . A good idea or a bad product? Howard Stapleton noticed that in his town, large groups of young people often met outside of shops. They ...
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A.
正确
B.
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【简答题】There was a park near my home. But I didn’t go there very often. Many people said there was nothing special. One afternoon I went into the park and found it was really small. I walked quickly because ...
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