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8.已知为单位向量,且,则的夹角为(  ).

A.   B.   C.   D.

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7.已知分别为圆锥曲线的离心率,则的值(  ).

A.一定是正值   B.一定是零  C.一定是负值   D.符号不确定

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6.已知椭圆,长轴在轴上,若焦距为,则(  ).

A.   B.    C.   D.

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5.已知向量,若共线,则实数(  ).

A.    B.   C.   D.

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4.若,则是(  ).

A.第一象限 B.第二象限  C.第三象限 D.第四象限

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3.等比数列中,,则公比(  ).

A.   B.   C.   D.

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2.设集合 (  ).

A.  B.    C.   D.

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1.设,则等于(  ).

A.    B.   C.   D.

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Ⅳ.书面表达(10分)

期末考试结束以后,想象一下你收到各科老师给你的成绩报告单和评价,并给你的朋友或者长辈写一封信。(可以适当补充少部分内容,但必须包括下列信息,不能出现真实姓名及学校,60-80单词)

              My Ideal Report Card
Name :          Class:           mark:
Chinese  teacher :   good at reading          A
Math  teacher:    hard-working but careless      A
English  teacher :   good at listening and speaking    A
 History teacher :   should be better           B
Physics teacher:    could do better           B
PE  teacher :     do well in sports          A+
 
         

Dear  ______________

I finished my end –of-year exam last week and got my report card yesterday.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

                             Sincerely 

                               ____________

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1. 不要在床上看书, 这对你的眼睛有害。    Don't  read  in  bed.  ______ bad ______ your eyes.  2. 你作导游多久了?

 ________  __________ have you been a tour guide?  3. 如果你努力一些, 你就会赶上你的同学们。    If you works harder, you'll ______  _______with your classmates.  4. 我正想睡觉,你能把音乐声关小吗?    I'm going to sleep,can you _______  _________the music,please?    5. 他们作为交换生在英国学习英语已一年了。

They have been learning English as______  ______ in England

 for  one  year.

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