著名漫画家郑辛遥的《智慧快餐》中有一幅耐人寻味的漫画:一架飞机飞翔在云端,舱门已经打开,外边有一位男士,抓着一把打开的雨伞,缓缓地往下降落,脸上带着愉快的微笑。画家在旁边还写了一句话:“无知常常是这么一种东西,当你拥有它的时候,你会拥有无穷的胆量。”后来有一位作家以“无知者无畏”为名写了一本书,曾经轰动一时,虽然这不是他的发明。调查表明,中小学生上课主动举手发言的人数和年龄成反比。小学低年级学生上课主动举手发言者为数众 There is an intriguing comic in the famous cartoonist Zheng Xin Yao's “Wisdom Express”: an airplane flying in the clouds, the door open, a man outside, grabbing an open umbrella and slowly landing, Smile with a happy face. The painter next wrote a sentence: “Ignorance is often such a thing, when you have it, you will have infinite courage. ” Later, a writer to “ignorant ” A book, once sensational, although this is not his invention. The survey shows that the number of primary and secondary school students who take the initiative to raise their hands is inversely proportional to their age. The lower primary students in primary school raised their hands to speak in public