题目内容

I am to my parents for all that they have done for me. (grateful)

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I was filled with ______ after I achieved great success through hard work. (proud)

正等轴测图的轴间角为( )

A. 120°
B. 60°
C. 90°

正投影的基本特性是显示性,积聚性和类似性。

A. 对
B. 错

旅游业是“建立在流沙上的大厦”,因此,我国不宜发展旅游业。

A. 对
B. 错

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