所有差别的扩大都市不公平的体现,而且和效率相冲突。()
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According to video 1, what can't we do with AR technology?
A. we can drink a lot of water without really drinking it.
B. we can get the information we want wherever we are.
C. we don't need a screen anymore, everything is just in front of our eyes.
D. we can try the clothes without really trying on it.
What does the ideal future of higer education look like to Ammar?(Video 2)
A. It will be something that more accessible.
B. It will be more customizable.
C. It will be able to learn in global scale.
D. It will bring you outside of the classroom as well.
Mobile phone is a kind of VR equipment.(Video 3)
A. 对
B. 错
以下对二维整形数组a进行正确初始化的语句是（ ）
A. int a[2][]={{1,0,1},{5,2,3}};
B. int a[][3]={{1,2,3},{4,5,6}};
C. int a[2][3]={{1,2,3},{4,5},{6}};
D. int a[2][3]={{1,0,1},{},{1,1}};
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