题干

下列叙述正确的是(   )

A:饱和溶液一定是浓溶液,不饱和溶液一定是稀溶液

B:铝比铁具有更好的抗腐蚀性能,是因为铁比铝更活泼

C:碱溶液能使酚酞溶液变红,那么能使酚酞溶液变红的一定是碱的溶液

D:用汽油和加了洗涤剂的水分别除去衣服上的油污,两者去污原理不同

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D

同类题3

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    Jodie's Daddy is a Garbageman(垃圾清理工)

    Mr Swales wanted to find out what his students' parents did. He had just called Jodie when some girls burst out laughing. Shirley shouted, “Jodie's Daddy is a Garbageman!”

    Everybody in the class laughed out loud, except Jodie. She felt her face turn red.

    “Silence!” Mr Swales said, “Being a garbagemen is a difficult and useful job. We should all be thankful to Jodie's father.”

Jodie's father came to walk her home from school as usual, but she didn't run up to him the way she always did. When they got back home, Jodie went to her room and cried for a long time.

    Her father came into her room, “What happened, Jodie? Why are you so sad?”

    Jodie told her father what had happened and looked at him. He didn't seem angry or hurt. “Well,” he said, “they are right. Being a garbageman is a dirty job. Tomorrow's Saturday. Come to work with me, Jodie.”

    The place really smell too good. Jodie wrinkled her nose. “Don't worry, kid. In five minutes you won't smell a thing.” said her father.

    Everybody there was working hard, and they seemed to have a good time. Jodie's father handed her a pair of gloves and told her to get the little plastic bags and throw them into the truck.

    It was fun, but also hard work. Jodie's arms soom got tired. At last, no more garbage was left and Jodie felt very happy.

    “Garbage is disgusting, but when we clear it away, everything's nice and clean. You can make yourself happy only by making other happy. That's why I like being a garbageman so much.”

    Jodie give her dirty, smeely garbageman daddy a big kiss(吻). She said, “When I grow up, I will be a garbagegirl!”

    Now whenever someone asks Jodie what her daddy does, she says, “He's a garbageman! Everybody makes garbage, but my daddy takes it away!”