若一条直线平行于平面内的任一直线,则此直线与该平面平行。( )
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若一平面上的两平行直线对应平行于另一平面上的两平行直线,则这两平面相互平行。( )
A. 对
B. 错
若两特殊位置平面相互平行,则它们具有积聚性的那组投影必相互平行。( )
A. 对
B. 错
Audience adaptation is an important factor in which of the following steps of the speechmaking process?1
A. formulating a specific purpose
B. writing an introduction and conclusion
C. choosing visual aids
D. all of the above
E. a and b only
According to your textbook, what is the most important early step in the process of developing a successful speech?
A. creating a preliminary bibliography
B. researching for speech materials
C. formulating the specific purpose
D. brainstorming for a central idea
E. selecting the residual message