题干

 物理学习需要加强理解,培养学科思维 . 下列说法正确的是(    )

A:房屋、树木随地球转动不属于机械运动

B:对同一物体选用不同的参照物,其运动情况一定不相同

C:在匀速直线运动中速度与路程成正比,与时间成反比

D:用 ts 也可以表示物体运动的快慢,且 ts 越小,表示运动越快

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D

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      Ann worked for a big company. One of the duties of her 1 was to go to the post office every day and 2  the company mail. One day in December, she 3  a beggar making himself up as a Santa Claus 4  on the corner of the street. Each day she 5 her coins and dropped them in his bowl. He would smile and 6  her a Merry Christmas.

      At night the temperature dropped below 0℃, but the Santa Claus 7 stood in the cold wind.  8  she dropped her coins into his bowl, she handed him a pair of gloves.

      A week later, a(n) 9  Santa Claus was standing there. “What happened to the other Santa Claus?” she asked. He told her, “He's very 10  today.” She prayed for his health.

      Later that day, a colleague came into her office 11 . “I don't know what I'm going to do.” “What's wrong?” she asked. “It's my ex—husband,” her colleague 12 , “I don't have any money to buy my boys anything for Christmas, 13  my ex—husband refuses to send money to them. It breaks my heart that they won't have anything this year. ” The lady 14  her colleague, “I'm sure everything will 15  It's Christmas. Believe in miracles (奇迹).”

      That evening, she told her husband about her colleague's 16 , “I know we don't have much money to 17  , but I'd like to give her fifty or a hundred dollars. We'll just get ourselves less this year. Last year we couldn't afford to buy anything for 18  but we still had a wonderful Christmas.” Her husband smiled, “Give her one hundred dollars. She needs it more than we do.”

      She reached up and held him. Warmth spread 19  her body. He held her and realized that there really was a Santa Claus—and he had 20  her !