第二部分 阅读理解（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
A
In the early morning, I headed for the back door and found 10 inches of snow blanketing our home. Oh, no, Bryan would have to clear the roof again, I thought. But Rio rolled onto his back, playing in the white stuff and kicking his back legs, delighted. His days in an animal shelter in New Mexico were long forgotten---he had wholeheartedly enjoyed life as a Colorado dog.
