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    .
    It is none of your business ___ other people think about you. Believe yourself.

    A．howB．whatC．whichD．when

    B

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    (D)

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    A．your eyes are close to it                  B．it reflects some of the sunlight

    C．it has light of its own                     D．your eyesight can get to it

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    A．visible            B．all colors          C．giving off light      D．sunlight

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    B．Light from the book is much shorter than that from the moon.

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