1 . 阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。
注意： 1. 续写词数应为150左右； 2. 请按如下格式在答题卡的相应位置作答。
She was the prettiest puppy we had ever seen, and the whole family immediately fell in love with her. We named her Onyx because of her black, shiny black coat. She spent her first vacation with us when she was only ten weeks old and had her first bath and swim in the St. Lawrence River. We had no clue that this amazing little ball of fur would end up being our hero.
As she grew older, Onyx became more and more involved in our family activities. On hot summer days, Onyx enjoyed floating on the river with us in her own rubber tube (橡皮圈). Amazingly standing on the top of the tube, she smiled while showing off her perfect balance. Resting her front legs and paws over the edge of the rubber tube, she kept her eyes shut as she floated until she’d had enough of the warm sun on her black coat.
One day, our eighteen-year-old daughter, Margie, announced she was going to swim across the bay. No one in the family was free to go swimming with her. The unwritten rules, regardless of swimming ability, was to have a companion in the water with you, especially when swimming the width of the bay. I was not a good swimmer, so I said to Margie, “Take Onyx with you.” Having heard her name, Onyx woke up from a nap and was ready for action. Margie signed the dog to follow her. Onyx ran to the water next to her. They entered the freezing river together and swam side by side across the bay.
I watched from the bank as they reached the sandbar (沙洲) on the far shore. They rested a few minutes before diving into the water for the return trip. I felt uneasy for some reason and continued to watch the pair swim side by side.
Suddenly I heard Margie calling out, “I have a cram (痉挛) in the leg! ”
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Seeing the pair approaching the riverbank, I breathed a sigh of relief.
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