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【单选题】
是二维几何变换中( )的变换矩阵。A.
平移变换矩阵
B.
关于原点的二维反射变换矩阵
C.
比例变换矩阵
D.
关于 y 轴的二维反射变换矩阵
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皮皮学刷刷变学霸
举一反三
【单选题】---What does Old Walter usually do in his retirement? ---- These days he is ______ memories of village life for his new book.
A.
putting up
B.
putting on
C.
setting up
D.
setting down
【单选题】Speaker A: What do you usually do on rainy days? Speaker B: _______________
A.
I don't like rainy days.
B.
I usually stay at home.
C.
I hope it doesn't rain so often.
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