用与橡胶棒摩擦过的毛皮靠近与丝绸摩擦过的玻璃棒，则毛皮与玻璃棒(   )

    What is color? Why do some of the things around us look red, some green, others blue?
    Colors are really made by deflected (反射) light. We see color because most of the things reflect light. In the same way, if something is green, it reflects most of the green light. If something reflects all light, it is white. If it doesn't reflect any light, it is black.
    Some of the light is reflected and some is taken in (吸引) and turned into (变成) heat (热能).The darker the color is, the less light is reflected, the more light is taken in. So dark-colored clothes are warmer in the sun than light-colored clothes.

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    Mike had a nice blue cup which he liked best. It was a present from his aunt for his fifteenth birthday last year. He cleaned it once a day and took good care of it. His cat, Mimi, was very naughty(淘气的) and sometimes it could make some trouble(麻烦) for Mike.

    The day before yesterday, the cup was broken(打破) by his cat. He felt unhappy. Susan saw him and asked, "You look sad. What's the matter with you?"

    Mike said, "There is something wrong with my cup."

    Susan said, "Don't worry. I can repair it."

    Mike felt surprised and asked, "Repair? You can repair it? You?"

    "Yes. Believe me! Where is it?" Susan answered.

     "Here. My cup is broken. Are you sure you can repair it?" Mike took out his broken cup.

     "Ha……, I made a mistake(错误). I think your__1__ is broken," Susan said.

    Hearing what Susan said, Mike couldn't help laughing.