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4.(  )While the alien was visiting the museum, the boy  ______the TV station.

A. call            B. ask             C.  called         D.  asked

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3.(  )----In our English study reading is more important than speaking, I think.

 ----- I don’t agree. Speaking is _____ reading.

A. as important as     B. so important as      C. the most important   D. the same as

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2.(  )You can’t _____ jeans to the party. If you do so, the teacher won’t let you ___.

A. put on ; in        B. dress ; out         C. have on       D. wear; in

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1.(  )---Can you sing?----Yes I can,_____ I can’t sing very well.

 A. but             B. or           C. so              D. and

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3. 解:(1)作图略;

(2)取点F和画AF正确(如图);

  添加的条件可以是:F是CE的中点;

  AF⊥CE;∠CAF=∠EAF等。(选一个即可)

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2. 证明:∵AB∥DE,∴∠B=∠DEF,∵AC∥DF,∴∠F=∠ACB,……1分

∵BE=CF,∴BE+EC=CF+EC,即BC=EF,……2分

∴△ABC≌△DEF,∴AB=DE.……3分

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1.

解:(1)∵DEBC

∴∠EDB=∠DBC ···························································· 3分

     (2)∵ABBC BD是∠ABC的平分线,∴DAC的中点

      ∵DEBC,∴EAB的中点,

DE   

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1. 120°  ;2. ;3. 90;4. 25°;5. ;6. 60;7. ;8. 5609. 48°;10.;11. ;12. 35;13. 70;14.   ;15. 600.16.7.5;17. 60;18. 50°;19. 45 o;21. ;22. 90 O   .23. 70°;24. 25;25。∠ABD=∠BDE或∠ABE=∠DEC或∠ABE+∠DEC=180°;26. 65;27.40;28.

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1.C 2.D 3.C 4.C 5.D 6.C 7.C 8.B 9.C 10.C 11.C 12.C 13.A 14.A 15.B

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3.(2008年浙江省衢州)如图,AB∥CD

(1)用直尺和圆规作的平分线CP,CP交AB于点E(保留作图痕迹,不写作法)

B
 
A
 
(2)在(1)中作出的线段CE上取一点F,连结AF。要使△ACF≌△AEF,还需要添加一个什么条件?请你写出这个条件(只要给出一种情况即可;图中不再增加字母和线段;不要求证明)。

 

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