0  440293  440301  440307  440311  440317  440319  440323  440329  440331  440337  440343  440347  440349  440353  440359  440361  440367  440371  440373  440377  440379  440383  440385  440387  440388  440389  440391  440392  440393  440395  440397  440401  440403  440407  440409  440413  440419  440421  440427  440431  440433  440437  440443  440449  440451  440457  440461  440463  440469  440473  440479  440487  447090 

本講以選擇題、填空題考察本章的基本概念和性質(zhì),重點考察平面向量的數(shù)量積的概念及應(yīng)用。重點體會向量為代數(shù)幾何的結(jié)合體,此類題難度不大,分值5~9分。

平面向量的綜合問題是“新熱點”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、共線等問題,以解答題為主。

預(yù)測07年高考:

(1)一道選擇題和填空題,重點考察平行、垂直關(guān)系的判定或夾角、長度問題;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);

試題詳情

2.向量的應(yīng)用

經(jīng)歷用向量方法解決某些簡單的平面幾何問題、力學(xué)問題與其他一些實際問題的過程,體會向量是一種處理幾何問題、物理問題等的工具,發(fā)展運(yùn)算能力和解決實際問題的能力。

試題詳情

1.平面向量的數(shù)量積

①通過物理中"功"等實例,理解平面向量數(shù)量積的含義及其物理意義;

②體會平面向量的數(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)量積表示兩個向量的夾角,會用數(shù)量積判斷兩個平面向量的垂直關(guān)系。

試題詳情

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

試題詳情

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

試題詳情

38. You _________ pay more attention to your spelling next time.

     A. would       B. should        C. will          D. shall

試題詳情

37. You _________ do the exercise if you don't want to.

     A. may not      B. can't         C. mustn't            D. needn't

試題詳情

36. "May I go now?" "No, you ________. "

   A. mustn't        B. needn't         C. mightn't           D. won't

試題詳情

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

試題詳情

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

試題詳情


同步練習(xí)冊答案