设f(x)在[a，b]上是连续函数，且f(a)=f(b)=0，。

下列各句中，加点成语使用正确的一项是______。

运用英语教学法并结合自己的教学实践对下面的教学设计进行评价(用英语作答)。Content：AIDS Preparation：Divide the class．into two groups．Tell them there will be a competition between the two groups according to their levels，sex，locations in the classrooms or whatever．The members have to try to catch the chances to speak before the whole class by raising their hands．The student who raises his hand first can get the chance，then he can get one mark for his group．The competition lasts in the whole process of the class．At the end of the lesson，the winning group can get some gifts． Procedure：Step 1 Begin the class by talking with the students in a casual way，SO the students can feel relaxed．We can greet the students first，then turn to ask what they think the most terrible disease in the world is．Help them to say“AIDS”，then we come to the topic smoothly．In this way the teacher just tries to let the students not to think learning is a burden． Step 2 Tell them the competition，and the rules of the competition． Step 3 Fast reading．Get the students to read the passage about Aids quickly and then answerthe question：What is Aids?The first student who answers the question can get one mark． Step 4 Detailed reading．Ask the students to read the passage carefully，then answer some detailed questions like：What are the causes of the disease?Why is the disease SO terrible? Step 5 Discussion：How should we treat the people who have disease?Then some volunteers stand up and state what they think．Remember to give them marks． Step 6 Design work．Get the students to design some little posters which can remind people to be careful of AIDS．Give them some little cards to design on． Step 7 Collect the cards and give marks．Some good ones may be as follows： No drugs，no AIDS． Love condoms，love life． AIDS is a super disease． A condom a day keeps AIDS away． Step 8 Use the cards to form the pattern of the two words NO AIDS．So it can remind the students as well．At the end count the marks and give the gifts to the winning group．

关于当代小说创作，下列说法不正确的一项是______。

语言文字是人类最重要的______和信息载体，是人类文化的重要组成部分。

奥苏伯尔的有意义学习理论认为引起有意义学习的主观条件是______。

教师必须十分重视自身的发展，做到以身作则、为人师表。这体现了教师劳动______的特点。

以某种教学理论为指导，以一定的教学实践为基础形成的

已知二次函数f(x)的二次项系数为实数a，且其图象与直线2x+y=0交点的横坐标为1和3。 (1)若方程f(x)+6a=0有两个相等的实数根

下列情境代表内在动机的是______。

若Sn是等差数列{an}的前n项和，已知则 A． B． C． D．

已知常数a≥0，函数。

看了鲁迅先生写的小说《祝福》，头脑中出现一个旧中国深受多种压迫的劳动妇女祥林嫂的形象

元认知的实质是人对认知活动的自我意识和______。

以下属于大班幼儿科学教育活动目标的是______。

一个带盖的长方体容器，底面是边长为10cm的正方形，高为11cm

阅读下面的文言文，完成下列小题。 千里之马 古之君人，有以千金求千里马者，三年不能得。涓人言于君曰：“请求之。”君遣之。三月得千里马；马已死，买其骨五百金，返以报君。君大怒曰：“ 所求者生马，安事死马①? 而捐五百金!”涓人对曰：“死马且买之五百金，况生马乎?天下必以王为能市 ② 马。马今至矣!” 于是不能期年，千里之马至者三。 注释：①安事死马：要死马做什么。②市：买。

质量为m的火车以恒定的速率在一段水平面内沿一段半径为R的圆形轨道转弯，如图20所示，已知路面有一定的倾角。当火车以速率vo在此弯道上转弯时，车轮对轨道的侧压力恰好为零。如果火车以实际速率(v>vo)在此弯道上转弯时，车轮将施予铁轨一个与枕木平行的侧压力P，试求侧压力P的大小。

思想政治课教学的基本组织形式是______。

生活中需要对一些物理量进行估测，以下估测接近实际的是( )。