单项选择题
1、 函数y=2x3+3x2-12x+1在区间(-2，1)内是    (    )
A．单调递增
B．单调递减
C．不增不减
D．有增有减


2、 一列横波的波形图如图3-3所示，已知图中质点A向下运动，则波的传播方向和质点B的运动方向分别是（　　）

A．沿x轴正向，沿y轴正向
B．沿x轴正向，沿y轴负向
C．沿x轴负向，沿y轴正向
D．沿x轴负向，沿y轴负向


3、
A．充分不必要条件
B．必要不充分条件
C．充要条件
D．既不充分也不必要条件


4、 依次填入下列各句横线处的词语，恰当的一组是（　　）
人类赖以生存的地球，是一个__________的星球。它有着一道道的“防线”。尽管这些“防线”是天然的，但都像人为安排的那样__________。靠着这些铜墙铁壁般的天然__________，地球才能抵挡多样的天外袭击、__________着地球上的生命。
A．“设防”奇妙障碍保护
B．防卫巧妙屏障保证
C．防卫奇妙障碍保证
D．“设防”巧妙屏障保护


5、 抛物线y²=2x的焦点为F，准线与x轴交于点H．抛物线上一点A的横坐标为8，则ΔAHF的面积为
A．2
B．-2
C．4
D．-4

6、 阅读下列短文，回答题。
Dick lived in England．One day in January he said to his wife，“I'm going to fly to New York next week because I've got 80me work there．”“Where are you going to stay?”his wife asked．“I don’t know yet．”Dick answered．“Please send me a telegram(电报)with your address，”his wife said．
“All right，”Dick answered．
He flew to New York on January 31 st and found a nice hotel in the eenter of the city．He put his things in his room and then he sent his wife a telegram．He put the address of his hotel in it．
In the evening he didn’t have any work，SO he went to a cinema．He came out at nine o'clock and said，“Now I'm going back to my hotel and have a nice dinner．”
He found a taxi and the driver said，“Where do you want to go?”But Dick didn’t remember the name and address of his hotel．
“Which hotel are my things in?”he said．“And what am I going to do tonight?”But the driver of the taxi did not know．So Dick got out and went into a post office．There he sent his wife another telegram，and in it he wrote，“Please send me my hotel address at this post office．”
Dick flew to New York because__________.
A．he went there for a holiday
B．he had work there
C．he went there for sightseeing(观光)
D．his home was there


7、
A．A
B．B
C．C
D．D


填空题
8、


简答题
9、     假设你是李华，学校组织夏令营，欢迎外国学生参加。请用英语写一封信邀请你的美国朋友Tim参加并告诉他夏令营的具体安排：

注意：1．开头已为你写好
2．词数应为100左右
生词：文化culture
Dear Tim,
     How are you doing recently?
                                                                                           Yours,
                                                                                           Li Hua

10、 (本小题满分13分)

(I)求双曲线方程；
(Ⅱ)若点M(3，m)在双曲线上，求证MF₁⊥MF₂．

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