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5.(08年上海市部分重点中学高三联考6)已知圆的半径为2,圆心在轴的正半轴上,且圆与直线3+ 4+4 = 0相切,则圆的标准方程是_______________________

答案:

1(2008学年度第一学期上海市普陀区高三年级质量调研第5题) 已知两直线方程分别为,若,则直线的一个法向量为        . 答案:

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4.(上海市八校2008学年第一学期高三数学考试试卷10)函数的图象恒过定点A,若点A在直线上,其中,则的最小值为      .

答案: 

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3.(上海市高考模拟试题8)曲线的长度是      .

答案:

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2.(上海市宝山区2008学年高三年级第一次质量调研12)如图,在平面斜坐标系中中,,平面上任一点的斜坐标定义如下:若,其中分别为与轴,轴同方向的单位向量,则点的斜坐标为.

那么,以为圆心,为半径的圆有斜坐标系中的方程是__________.

答案:

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1.(上海市宝山区2008学年高三年级第一次质量调研4)设为圆的动点,则点到直线的距离的最小值为_________.

答案:1 

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1.( 2009年上海市普通高等学校春季招生考试13)过点与圆相交的所有直线中,被圆截得的弦最长时的直线

   方程是                              [答] (   )

  (A).   (B).      (C).  (D).

答案:C

1(上海市青浦区2008学年高三年级第一次质量调研第15题)已知两点,若直线上存在点

使,则称该直线为“型直线”.给出下列直线:

;②;③;④,其中为“型直线”的是(   )

A.①②   B.①③    C. ①④     D. ③④

答案:A

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95. Many people swarmed into big cities to seek their __________ , but most of them failed.

A. money          B. earnings

C salary           D. fortune

96 I could tell that the teacher was satisfied with our recent examinations from the____on his face.

A. view           B. expression

C. appearance        D. sight

97The archaeologists ___________ the ancient caves.

A. observed         B. watched

C. explored         D. exploited

98He always __________ a piece of chewing gum when he does his homework.

A. eats         B. swallows

C. bites        D. chews

99Is $ 10____ for the expenses of your journey?

A. sufficient       B. efficient

C. satisfactory      D. effective

100The first performance of the musical play “The Sound of Music” aroused____in audience.

A.  affection      B. Importance

C. enthusiasm      D. Influence

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94. If you want to know the train schedule, you can __________ at the booking office.

A. require         B. demand

C. acquire         D. inquire

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93. The collapse of the World Trade Center has put US economy in a difficult __________

A. occasion          B. case

C. situation          D. background

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92. To regain their after a long walk ,the tourists lay in the grass for nearly half an hour.

A. force           B. power

C. energy          D. health

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