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23.(12分)解:

由图可知F1作用时间为t0,物体做匀加速运动,然后改为反向F2作用时间为2t0,物体先减速再反向加速至出发点.

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(1)0.820mm (2)16.98mm  

Ⅱ.(共12分)

①(4分)

②串(2分)  290Ω(3分).③偏大(3分)

 

 

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22.Ⅰ.(共6分,每空3分)

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31.

(Ⅰ)(15分)

(1)                                                           

 

(2)                                                         

 

(3)1)①             ②            ③                

 

2)                              。3)          

 

(Ⅱ)(16分)(1)                            。(2)         

 

(3)                            

 

(4)①:              

 

②:__________________________________________________________________.

 

③:____________________________________________________________________

 

______________________________________________________________________。

 

方案二:第一步:选取♀                ×♂                杂交.

 

第三步:再选取♀                ×♂                杂交.

 

实验结果:如果                                   

         

如果                                  

 

西安中学

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高2009届第一次模拟考试

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长安一中

理科综合答案

 

第Ⅰ卷  选择题(每题6分,共126分)

题号

1

2

3

4

5

得分

 

答案

B

C

A

B

D

 

 

题号

6

7

8

9

10

11

12

13

得分

答案

D

B

C

C

C

B

D

C

 

题号

14

15

16

17

18

19

20

21

得分

答案

D

C

BC

ACD

BD

B

BC

A

 

第Ⅱ卷  非选择题(174分)

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30.(11分)

(1)              , ___ ___  _   __。(2)(     )          .

 

(3)             ;(    )                     .

(4)             。(5)       

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29.(16分)

(1)                                                

 

(2)                                                      

 

(3)(i)                                                   

(ii)                      ;                          

(iii)                                                 

(iv)                                                 

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28.(14分)                                                  

(1)                                                                     

 

(2)①____________________________  _       ________                   

 

_____________________________________________________             

 

(3)          ,                                                            

 

                                                                   

  

(4)                                                               

 

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27.(16分) ( l ) __________________,____________________,_________________.

( 2 )______________________________________.

( 3 )____________________________________.

 ( 4 )_____________________________________________________.

( 5 )__________________________.  ( 6)____________________________.

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26.(14分)

(1)                         (2)                    ;                   

(3)                                                                    

(4)                                    (5)                             

(6)                                                                        

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