问题
解答题
一条南北走向的公路，规定向南为正．怎样表示向北36千米？向南48千米？向北12.5千米？-20千米是什么意思？+25千米是什么意思？
答案
根据题意，规定向南为正，则向北为负，
故向北36千米表示为-36千米，向南48千米表示为+48千米，向北12.5千米表示为-12.5千米，-
20千米表示向北20千米，+25千米表示向南25千米．
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一条南北走向的公路，规定向南为正．怎样表示向北36千米？向南48千米？向北12.5千米？-20千米是什么意思？+25千米是什么意思？
根据题意，规定向南为正，则向北为负，
故向北36千米表示为-36千米，向南48千米表示为+48千米，向北12.5千米表示为-12.5千米，-
20千米表示向北20千米，+25千米表示向南25千米．
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| Mrs Wilson and Mrs Smith are sisters. Mrs Wilson lives in a house in Duncan and Mrs Smith lives in a building in Victoria. One day Mrs Wilson visited her sister. When her sister answered the door Mrs Wilson saw tears in her 1 . "What's the matter?" she asked. Mrs Smith said "My cat Sammy 2 last night and I don't know 3 to bury She began to 4 again. Mrs Wilson was very 5 because she knew her sister loved the cat very much. Suddenly Mrs. Wilson said "I can bury your cat in my 6 in Duncan and you can come and visit him 7 ." Mrs. Smith stopped 8 and the two sisters had tea together and a nice visit. It was now five o'clock and Mrs Wilson said 9 it was time for her to go home. She 10 her hat, coat and gloves and Mrs Smith put the 11 cat Sammy into a shopping bag. Mrs Wilson took the shopping bag and walked to the bus stop. She waited a long time for the bus so she bought a 12 . When the bus arrived she got on the bus, sat down and put the shopping bag on the 13 beside her feet. She then began to read the newspaper. When the bus arrived at her bus stop she 14 the bus and walked for about two minutes. Suddenly she remembered she 15 the shopping bag on the bus. She couldn't find the bus. How poor she was! | ||||
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