0  244830  244838  244844  244848  244854  244856  244860  244866  244868  244874  244880  244884  244886  244890  244896  244898  244904  244908  244910  244914  244916  244920  244922  244924  244925  244926  244928  244929  244930  244932  244934  244938  244940  244944  244946  244950  244956  244958  244964  244968  244970  244974  244980  244986  244988  244994  244998  245000  245006  245010  245016  245024  447090 

7.Perseverance is a kind of quality-and that’s_______it takes to do anything well.

    A.what       B.that       C.which         D.why

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6.The young  man managed to save a boy and received a medal in _______for his bravery.

    A.award      B.reward     C.turn          D.honor

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5.She couldn’t come up with a solution to the problem, so she ________me for help.

    A.asked for    B.called at   sulted with   D.appealed to

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4.He get well-prepared for the job interview ,for he couldn’t risk______the good opportunity.

A.to lose     B.losing      C.to be losing       D.being lost

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3.One thousand dollars a month is not a fortune but would help cover my living _______.

A.bills       B.expenses    C.prices         D.charges

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2.The boy has an amazing appetite ______American country music.

A.to         B.on         C.with          D.for

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第一节 单项选择(共25小题;每小题1分,满分25分)

从每题所给的A、B、C、D四个选项中,选出可以填入空白处的最佳选项。

1. Everyone touched ______words after they heard her moving story.

A.beyond     B.without     C.of            D.in

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22.(12分)已知是一元二次函数,不等式的解集是(0,5),且在区间[-1,4]上的最大值为12

(1)求的解析式

(2)是否存在自然数,使得方程在区间(+1)内有且只有两个不等实根?若存在,求的值;若不存在,请说明理由。

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21.(12分)设数列{}的前项和

(1)证明{}是等比数列;

(2)证明是等差数列;

(3)求数列{}的通项公式

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20.(12分)设函数

(1)对于任意实数恒成立,求实数的最大值

(2)若方程有且仅有一个实根,求实数的取值范围

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同步练习册答案