下列哪些属于矢量数据的分析方法？
A. 坡向分析
B. 谷脊特征分析
C. 网络分析
D. 地形剖面分析
In China, if the host keeps on apologizing for the homely dishes, he/she ____
A. is showing their respect to the guest.
B. is explaining why the dishes are not good enough.
C. is inviting the guests to praise him/her for their hospitality.
Why do the Chinese regard themselves as decedents of Yan and Huang? ______
A. Because Yan and Huang are the first human beings
Because Yan and Huang fought a great battle
C. Because Yan and Huang were the leaders of two great tribes
Confucius said: “Yi has Tai Ji, which generates two elementary forms”. The two elementary forms refer to ___.
A. teacher and student
B. Yin and Yang
C. mountain and water
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