什么是计算机病毒?计算机病毒有什么特点?

在20，24，35，45，55这五个数中，有因数3的数是______

小辉是班上有名的“调皮大王”，他在上课时往前排同学后背贴字条，课间把口香糖粘在同学的椅子上，还给同学起绰号，用小石头砸坏了邻居的窗户玻璃……他经常遭到老师的批评，他的父亲对他非打即骂。九岁那年

以艾利斯ABC理论为基础。通过改善学生的认知从而改善他们情绪和行为的心理辅导方法称为______。

一所学校在较长时间内形成的，影响所有成员的价值取向和行为的定势，称之为______。

现场教学和个别指导是中小学教学的______。

马斯洛将认知、审美的需要列入下面哪一种需要之中?______

Minority children often encounter racism in their daily lives, and those who experience discrimination more often have more symptoms of depression, according to a study to be presented on Sunday, May 2 at the Pediatric Academic Societies(PAS)annual meeting in Vancouver, British Columbia, Canada. "Unfortunately, minority children perceive discrimination often in their lives, " said Lee M. Pachter, DO, co-author of the study and professor of pediatrics at Drexel University College of Medicine and St. Christopher's Hospital for Children in Philadelphia. "Fifty-five years after Brown v. Board of Education and the civil rights movement, racism is still common in their lives. " Dr. Pachter and his colleagues surveyed 277 minority children ages 9—18 years to determine the contexts in which they perceive racism and the relationship between discrimination, depression and self-esteem. Participants filled out questionnaires that included 23 scenarios in which they might perceive discrimination, such as being followed by a store security guard, getting poor service in a restaurant or being accused of doing something wrong at school. About two-thirds of the children were Latino or African American, and 19 percent were multiracial. Results showed that 88 percent had at least one experience with racism, and nearly 12 percent had experienced racial discrimination in at least half of the situations described in the survey. The most common forms of discrimination were racial remarks, being called insulting names and being followed by security guards in stores. Experiences were similar for Latinos and African Americans, boys and girls, and younger and older children. "Not only do most minority children experience discrimination, but they experience it in multiple contexts; in schools, in the community, with adults and with peers. " Dr. Pachter said, " It's kind of like the elephant in the corner of the room. It's there, but nobody really talks about it. And it may have significant mental and physical health consequences in these children's lives. " Researchers also administered the Child Depression Inventory and the Rosenberg Self Esteem Questionnaire to 52 minority children. They found a significant correlation between perceived racism and depression, self-esteem and depression, but not between racism and self-esteem. " The next step is to look at whether discrimination creates stress that leads to racial/ethnic disparities in physical and mental health, " Dr. Pachter said.

图ll所示的a、b是经平面镜反射后的反射光线，画出对应的入射光线。

《义务教育音乐课程标准(2011年版)》中的“课程基本理念”是什么?

大学生刘某毕业后边打工边寻找创业项目，虽遇到种种困难和问题，但他始终没有放弃。在多方支持下

美国经济学家西奥多·舒尔茨和加里·贝克尔认为，______是经济发展和社会进步的决定因素。

一般来说，元认知知识不包括______。

《中华人民共和国教师法》规定，教师有下列情形之一的

如果a，b，c满足c＜6＜a，且ac＜0，那么下列选项中不一定成立的是______

对于培养学生智力技能最具有现实意义的途径是______。

教学中，教师应遵循启发性原则，一分为二看待学生，正确客观地评价学生的优点与不足。

EveryyearafloodoffarmersarriveinShenzhenformoney-makingjobsthey______beforeleavingtheirhometowns.

在赫尔巴特提出“教育性教学”的思想中，道德教育是最根本的任务，而教学是其最主要和最基本的手段。