题干

有科学家指出,质子的半径比以前认为的要小4%。如果这个结论进一步得到证实,那就意味着,要么阐释光和物质相互作用的量子电动力学理论本身有问题,要么许多基于现有质子大小计算所使用的里德伯常量是错误的。不管是何种情况,都意味着我们需要重写基础物理理论。科学家在已形成结论的领域进行不断研究、反复论证,甚至改写相关理论体系,这说明(  )

①物理学上现已获得的真理性认识都是特定过程的产物,都是主观与客观具体的历史的统一

②物理学现有的真理都有其适用的条件和范围,都包含着谬误的成份

③真理和谬误相伴相长于物理学研究的全过程

④研究对象的无限性及其绝对运动的属性,决定了物理学任何研究成果都只是相对正确的

A:①③

B:①④

C:②③

D:②④

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答案(点此获取答案解析)

A

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    Whatever life threw at us each year, our family had one tradition at Christmas: our dog Pepper opened our presents for us.

    Last year, everyone made it home for a Christmas get-together. However, it couldn't feel perfect because Pepper's health was becoming worse. Her life had already been longer than we expected-she was fourteen-and yet her mind was still sharp. Her love for life made us feel better. But her body could not keep up with her mind.

    Probably it was Pepper's last Christmas, so we decided to make sure she would enjoy it. On Christmas Eve, we each prepared presents for her.

    Soon, Pepper selected her first Christmas gift. She turned the present, just as she was a young dog once more. She pulled the paper off the dog treat before she chewed (咀嚼) it slowly. Our family was so happy.

    Pepper saw the remaining three presents, and then turned to Mom as if asking, “May I open another?”

    “Go ahead, girl!” Mom encouraged.

    For the next few minutes, Pepper opened each of her Christmas presents. While she did, she reminded us of the joy of being together. Our family felt as a whole-not because we were in the same room or city, but because our love brought us together.

    Pepper passed away after Christmas. Her peaceful passing made us tearful. Her passing was also a celebration of life, because she gave my family so much love and laughter.

    I still treasure Pepper's final Christmas gift. She taught me that no matter where we each spend the holidays, the smallest act of sincere giving can unite our family through our love. For me, that knowledge is the longest-lasting gift of all.