关于家庭因素与家庭教育的关系的论述中，正确的一项是（） ["家长职业与家庭教育影响之间有必然的联系","家庭气氛如何对子女不会产生影响","家长期望越高越能对孩子的学习起到促进作用","健康、文明的生活方式将为良好的家庭教育打下基础"]
爆炸性粉尘按引燃温度分为（）组。 ["3","4","5","6"]
In the history of any language the writing system always came into being before the spoken form.
In English， long vowels are also tense vowels because when we pronounce a long vowel such as/i：/，the larynx is in a state of tension.
料仓旋转阀不动作如何处理？
社会本位论
