Of all the kinds of public speaking, persuasion is the most complex and the most challenging.()
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被教育学者公认为是标志着教育学从哲学中独立出来的教育学专著是()。
A. 赫尔巴特的《普通教育学》
B. 杜威的《民主主义与教育》
C. 夸美纽斯的《大教学论》
D. 凯洛夫的《教育学》
When speaking to persuade, you need to think of your speech as a kind of mental dialogue with your audience.()
Childish __ she may be, she is kind and friendly.
A. If
B. Although
C. As
D. however
During the past ten years, there have been __ changes in the country.
A. Lasting
B. Dramatic
C. Powerful
D. imaginary