题目内容
下列属于单纯扩散的物质是______
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Mrs. Williams lived in a small street in London, and now she had a new neighbor. Her name was Mrs. Smith, and she talked a lot about her expensive furniture (家具), such as her beautiful dining table, her lovely dishes and her new kitchen. She loved all the things in the kitchen. One day, she began to talk her things again. "Do you know," she said to Mrs. Williams, "I’ve got a new dishwasher. It washes the plates and glasses and knives and forks beautifully." "Oh" Mrs. Williams answered, "Does it dry them and put them in the cupboard (柜橱), too" Mrs. Smith was surprised. "Well," she answered, "the things in the machine are dry after an hour, but it doesn’t put them away, of course. "I’ve had a dishwasher for twelve and a half years." Mrs. Williams said. "Oh" Mrs. Smith answered. "And does your dishwasher put the things in the cupboard when it has washed them" She laughed nastily (令人厌恶地). "Yes, he does." Mrs. Williams answered. "He dries the dishes and puts them away." Mrs. Smith knew Mrs. Williams’s meaning.
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