—Shall we go on an outing this weekend?—______________________.
A.Good idea
B.Go ahead
C.Help yourself
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Speaker A: Good morning, Sir. Speaker B: _______________
A.Yes. You can help me.
B.Thank you. It’s very kind of you.
C.Good morning.
Speaker A: __________________ Speaker B: It’s not expensive, only fifty Yuan.
A.How many do you want?
B.How much is the skirt?
C.How long does it take to get to your home from here?
物体的方向特征为：
A. 水平方向
B. 与水平方向的夹角
C. 最小二阶矩轴的方向
D. 垂直方向
图像的周长可以用_________进行计算。
A. 面积
B. 边界链码
C. 像素个数
D. 像素长度
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