简述有效市场假说的三种形式,并列举三个违背有效市场假说的异常现象?[对外经贸大学]
请认真阅读下列材料,并按要求作答。

请根据上述材料完成下列任务:
(1)如指导低年段小学生学习,试拟定教学目标。(10分)
(2)试拟定本节课的教学重难点。(10分)
(3)依据拟定的教学目标及教学重难点,设计导入环节的教学活动并说明理由。(20分)
下面是某教师的课堂教学片段。
Step 1 Revision
(互相问候后,教师将装有彩色小图片的信封分发给各小组)
T:Open the envelopes please. You have something nice in them. What are they?
S:A green ear,a red ball,a blue plane,a yellow cat...
T:What do you like?
S:I like..…
Step 2 Lead-in T:Let's sing the song Who Is Wearing Yellow Today.(音乐结束后,教师并没有停下来,而是改编歌词继续唱)
T:Who is wearing blue today?Blue today?Blue today?Who is wearing blue today?
Step 3 Presentation T:Who is wearing blue today?
S:You are wearing blue today?
T:Yes,I'm wearing blue today.I'm wearing a blue sweater now.
(学生跟读sweater,sweater,blue sweater)
T:I like the blue sweater.If you like it,please say it out loudly.
T:Do you like the pink sweater?(PPT展示粉红色毛衣图片)S:Yes,I like the pink sweater.
(借助学生的穿着,引出jacket等新词,展开活动)T:It is too hot.I will take off my sweater.Please take off your jacket.
(伴随动作,依次教授词组take off,put on,hang up and put away)
请根据材料回答下列两个问题。
(1)教师在复习、导入以及呈现环节创设了不同的情境,请分别对其创设方法及作用进行分析。(15分)
(2)评析教师在语言学习活动中的角色。(15分)
/L,网织红细胞0 .1%,WBC 3.0×10
/L,N<0 .5×10
/L,PLT<20×10
/L;血清铁蛋白210μg/L,血清铁170μg/dl,总铁结合力280μg/dl;尿常规(-),尿Rous试验阴性 。
根据提供的信息和语言素材设计教学方案,用英文作答。
设计任务:请阅读下面学生信息和语言素材,设计一个15分钟的英语阅读教学活动。教案没有固定格式,但须包含下列要点:
• teaching objectives
• teaching contents
• key and difficult points
• major steps and time allocation
• activities and justifications
教学时间:15分钟
学生概况:某城镇普通中学初中二年级第一学期学生,班级人数40人。多数学生已经达到《义务教育英语课程标准(2011年版)》三级水平。学生课堂参与积极性一般。
语言素材:
Who´s Got Talent?
Everyone is good at something, but some people are truly talented.
It´s always interesting to watch other people show their talents. Talent shows are getting more and more popular. First, there were shows like American Idol and America´s Got Talent. Now, there are similar shows around the world, such as China´s Got Talent.
All these shows have one thing in common:
"I"hey try to look for the best singers, the most talented dancers, the most exciting magicians,the funniest actors and so on. MI kinds of people join these shows. But who can play the piano the best or sing the most beautifully?
"Ihat´s up to you to decide. When people watch the show, they usually play a role in deciding the winner. And the winner always gets a very good prize.
However, not everybody enjoys watching these shows. Some think that the lives of the performers are made up. For example, some people say they are poor farmers, but in fact they are just actors. However, if you don´t take these shows too seriously, they are fun to watch. And one great thing about them is that they give people a way to make their dreams come true.
“电子表格的制作”是人教版七年级上册第三单元第九课的内容。其内容主要包括:Excel的启动与退出;Excel的窗口组成;工作簿、工作表的概念及其关系;单元格的概念及表示;数据的输入和修改等。Excel与Word属于同一家族,本身有许多相似之处,教师可引导学生进行知识的迁移,用已学会的Word知识来促进对Excel的基本操作的学习。
教学对象:初中一年级学生
教学环境:多媒体网络教室,每位学生一台计算机
教学用时:1课时(45分钟)
依据上述材料,完成下列任务:
(1)确定本节课的教学目标。(10分)
(2)对学生情况进行分析。(10分)
(3)设计本节课教与学的活动。(15分)