You have now gathered Appraisers together to reveal the surprise to them.你召集评委一起,给他们展露这一惊奇.Evaluation can be done by oneself, by confreres, by the experts appraisers.说课的评价方法是:自评、同行评定 、 专家评定 、 评委评定、书面评定.Some private appra...
石蕊: 从几种地衣类植物中获取的带色有机化合物的混合物.Litmus: Mixture of coloured organic compounds obtained from several species of lichens.地衣类植物生长速度慢,有好几年的寿命.其生长依赖于霉菌和海藻的共生.Lichens, which grow slowly and live for many years, result from fungi a...