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27. I feel ________ that it is wrong to kill animals for food.

    A. good         B. strongly       C. bad          D. excitedly

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26.  Look at the timetable. Hurry up! Flight 4026 ________ off at 18:20.

    A. took         B. will take       C. has taken      D. takes

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25.  Don’t play with the dog, Jack, for it ________ be dangerous at times.

    A. shall         B. should        C. can          D. must

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24.  --What would you give me in ________ for my recorder?

--My MP3. Do you agree?

    A. reward           B. turn          C. preparation     D. exchange

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23.  --Would you take this along to the office for me?

--________.

    A. With pleasure   B. That’s right        C. Never mind        D. Don’t mention it

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22.  --Would you like to buy a car here?

--Yes, but I’d like to buy ________ made in Shanghai.

    A. one          B. that          C. it            D. the one

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21.  --Which of the two poems do you like better?

-----________ shorter one, of course. I think it’s really ________ most interesting one.

    A. A; the        B. The; a        C. The; the       D. A; a

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23.(本题满分10分)几何证明选讲选做题

如图,AB是⊙O的直径,CF是⊙O上的点OC垂直于直径AB

F点作⊙O的切线交AB的延长线于D.连结CFABE点.

(1)求证:;     

(2)若⊙O的半径为OB=OE,求EF的长.

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