本講以選擇題、填空題考察本章的基本概念和性質(zhì),重點(diǎn)考察平面向量的數(shù)量積的概念及應(yīng)用。重點(diǎn)體會(huì)向量為代數(shù)幾何的結(jié)合體,此類題難度不大,分值5~9分。
平面向量的綜合問(wèn)題是“新熱點(diǎn)”題型,其形式為與直線、圓錐曲線、三角函數(shù)等聯(lián)系,解決角度、垂直、共線等問(wèn)題,以解答題為主。
預(yù)測(cè)07年高考:
(1)一道選擇題和填空題,重點(diǎn)考察平行、垂直關(guān)系的判定或夾角、長(zhǎng)度問(wèn)題;屬于中檔題目。
(2)一道解答題,可能以三角、數(shù)列、解析幾何為載體,考察向量的運(yùn)算和性質(zhì);
2.向量的應(yīng)用
經(jīng)歷用向量方法解決某些簡(jiǎn)單的平面幾何問(wèn)題、力學(xué)問(wèn)題與其他一些實(shí)際問(wèn)題的過(guò)程,體會(huì)向量是一種處理幾何問(wèn)題、物理問(wèn)題等的工具,發(fā)展運(yùn)算能力和解決實(shí)際問(wèn)題的能力。
1.平面向量的數(shù)量積
①通過(guò)物理中"功"等實(shí)例,理解平面向量數(shù)量積的含義及其物理意義;
②體會(huì)平面向量的數(shù)量積與向量投影的關(guān)系;
③掌握數(shù)量積的坐標(biāo)表達(dá)式,會(huì)進(jìn)行平面向量數(shù)量積的運(yùn)算;
④能運(yùn)用數(shù)量積表示兩個(gè)向量的夾角,會(huì)用數(shù)量積判斷兩個(gè)平面向量的垂直關(guān)系。
40. There ________ be a lot of small houses on both sides of the street.
A. used to B. get used to C. would D. did use to
39. The girl _________ out alone at night.
A. dare not go B. dare not to go C. dares not go D. does not dare go
38. You _________ pay more attention to your spelling next time.
A. would B. should C. will D. shall
37. You _________ do the exercise if you don't want to.
A. may not B. can't C. mustn't D. needn't
36. "May I go now?" "No, you ________. "
A. mustn't B. needn't C. mightn't D. won't
35. The teacher told the students that they ________ keep silent in class all the time.
A. ought to not B. ought not to C. ought not to have D. can't
34. You _________ me about it earlier, but you didn't.
A. should have told B. would have told C. must have told D. should tell
百度致信 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專區(qū) | 電信詐騙舉報(bào)專區(qū) | 涉歷史虛無(wú)主義有害信息舉報(bào)專區(qū) | 涉企侵權(quán)舉報(bào)專區(qū)
違法和不良信息舉報(bào)電話:027-86699610 舉報(bào)郵箱:58377363@163.com