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现代教学媒体是现代教学的（）。
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教学活动的出发点和归宿是（）。
某班级按学校布置开展“社区存在问题”为主题的实践活动。调研之前，学生自由组成调查小组，设计调查问卷。进入社区后，学生很难发现社区存在的问题，教师知道后，提议学生上网查阅资料。之后，每个学生依据自己的兴趣爱好，制定调查方案，再次深入社区，找到了社区存在的问题并撰写了调查报告。从综合实践活动的角度分析，上述案例说明（）。
简答题 新课程背景下教师要扮演哪些角色？
Passage twoQuestions 51 to 55 are based on the following passage.Female applicants to postdoctoral positions in geosciences were nearly half as likely to receive excellent letters of recor ompared with their male counterparts. christopher intagliata report.As in many other fields,gender bias is widespread in the sciences. men score higher starting salaries, have more mentoring (指导), and have better odds of being hired.studies nigher starting also perceived as more competent than women in stem(science, technology, enging,and Mathematics) fields. and new research reveals that men are more likely to receive excellent letters of recommendation,too."Say, you know, this is the best student I've ever had, "says kuheli dutt, a social scientist and diversity officer at columbia university's lamont campus. "compare those excellent letters with a merely good letter:'the candidate was productive, or intelligent, or a solid scientist or something that's clearly.solid praise,'but nothing that singles out the candidate as exceptional ot one of a kind."Dutt and her colleagues studied more than 1,200 letters of recommendation for postdoctor at positions in geoscience.they were all edited for gender and other idetifying information,so dutt and her team could assign them a scoer without knowing the gender of the student. they found that and women, th udes letters of recommendation from all over the world, and written by, yes,he findings are in the ioumal nature geoscience.Dutt says they were not able to evaluate the actual scientific qualificatiOf the apsing the data in the files. but she says the results still suggest women in geoscience are at apotential disadvantage from the very beginning of their careers starting with those less than out-standing letters of recommendation.we re not trying to assign blame or criticize anyone or call anyone conscious.Its of this study to open up meaningful dialogues on implicit gender bias.be it at a departmental level or an institutional level or even a discipline level "which may lead to some recommendations for the letter writers themselves. what do we learn about applicants to postdoctoral positions in geosciences?（）
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