Case 1

1
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• ?????????
• ? ?
• 2003.5 ??

2
Case 1
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3
?? ?? ??
?? 2 ? 3 2 1 ? 2 ??
1 ?2 1 2 ? 3
4
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??? 72 ????
5
?????????,???????????? 1??????????? ??????,??????
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6
2?????????? ??????????????????????????????????????
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7
????????????? 11² 121 ? 12² 144 ?13² 169 ?
14² 196 ?15² 225 ? 16² 256 ? 17² 289 ? 25²
625 ?????,????????????????,?????????????????????
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8
3????????? ????????,??????????????????????????????
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9
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10
Case 2
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?????????????, ?????????????????, ???,?????????20?
?,?????????
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11
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??????????????????? ???? 3 ??? 8 ????
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12
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???? ?????????????????????,??
??,?????????? ??????????
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????? ??????????????????
?????
13
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14
Case 3 ????????
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???11??????,????????????????????????????????????
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15
???? ????????????(25.9)????(21.2)?????(12.3)
??????????(21.9)?????(18.5)???(17.0)
?????????,???????????????.????????????????????????
??
16
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17
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????????????????????????????????? ????????????
(??)
18
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19
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????? ???????
20
Case 4 ?????
???????????????????????????????????????,?????????
????????????????????,????????????????????????,????
???????????,???????? ??????????????,???????????,
???????????
21
????If you are blind, what cant you
do? ?????? I cant see my father and mother. I
cant go to school. I cant read or write. I
cant watch TV.
22
??????If you are blind, what can you do
? ?????? I can hear with my ears. I can also
work with my hands. I can listen to the radio and
learn English. I can do some work for my
mother.
23
?????????(???????????)??????????????????????
???????If we meet with difficulty, what should
we do ?
24
???????
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25
????????????????????????? ?,?????????,???????
????!

26
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27
Thank you !