题干

生活在海边的渔民经常看见这样的情景:风和日丽,平静的海面上出现一把一把小小的“降落伞”──水母,它们在近海处悠闲自得地升降、漂游。忽然水母像受到什么命令似的,纷纷离开海岸,游向大海。不一会儿,狂风呼啸,波涛汹涌,风暴来临了。就划线部分,以下解释合理的是(  )

A:水母接收到了次声波

B:水母接收到了超声波

C:水母感受到了温度的突然变化

D:水母感受到了地磁场的变化

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答案(点此获取答案解析)

A

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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 !