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2015年6月国家开始实行饮用水新标准，矿物质水、碱性水、离子水等名称将被禁止使用．某品牌饮用水标签标明了该水中钠、钾、钙等的含量，钠、钾、钙等是指（　　）

    Bob and his family like eating fish very much. He often buys some fish in the shop and takes them home for dinner. His wife (妻子) often asks her friends to their home to have lunch and eat fish. One day, Bob buys some fish home and goes to his office to work. His wife sees the fish and thinks, “Good! I can ask my friends to come for lunch.”

    When Bob comes home from work in the evening, he can't find his fish. His wife says, “ Oh, It's your cat. Your cat eats it.” And she gives Bob some bread for dinner. The husband is very angry(生气的). He takes the cat and his wife to the shop near (附近) their home to weigh  the cat. Then he asks his wife, “You see, my fish is one kilo, and this cat is one kilo, too. My fish is here. Then where is my cat?”

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