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5.已知双曲线的渐近线为,且过点,则双曲线方程为(   )

A.            B.

C.            D.

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4.直线的夹角为(   )

A.      B.       C.      D.

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3.下列命题中,真命题是(   )

A.若直线平行于平面内的无数条直线,则

B.若直线在平面外,则

C.若直线,直线,则

D.若,那么直线平行于平面内无数条直线

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2.已知过点的直线与直线平行,则的值为(   )

A.     B.       C.       D.

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1.双曲线的离心率为(   )

A.     B.       C.      D.

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假如你是高一学生王刚,通过半年的学习,你对高中的英语教与学有了一定的了解,也有不少问题想和你的英语老师Mrs. Chen探讨和沟通,同时也想给你的英语老师提些建议,所以在放假之前你写一封信给Mrs. Chen。信的内容应包括以下几个方面:

       1) 感谢英语老师半年来的辛勤工作;

        2) 自己在学习中的几个问题,如单词记不住,语法怎么学等;

        3) 给老师的教学建议,如尽可能用英语授课,作业布置适量等;

注意:

        1)不要逐条翻译,应适当发挥;

2)字数为120左右;          3)不得使用真实姓名;

Dear Mrs. Chen,

How time flies! I have been your student for nearly half a year. To begin with, I want to _______

         ▲          ▲           ▲        

Best wishes to you and your family!

                            Yours,

                                    Wang Gang

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5. It is certain that the mystery of Tutankhamun’s tomb has never been fully explained.

    ▲   is certain   ▲   that the mystery of Tutankhamun’s tomb has never been fully explained.

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4. The students insist on being given free time on weekends, but their parents think differently.

   The students insist that they   ▲     ▲   free time on weekends, but their parents think differently.

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3. Just as we wanted to turn off the lights and go to sleep, there was a sudden knock on the door.

   We were   ▲   to turn off the lights and go to sleep   ▲   there was a sudden knock on the door.

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