第二部分 阅读理解
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.D）中，选出最佳选项，并在答题卡上将该项涂黑。
A
Americans use many expressions with the word dog. People in the United States love their dogs and treat them well. They take their dogs for walks, let them play outside and give them good food and medical care. However, dogs without owners to care for them lead a different kind of life. The expression, to lead a dog's life, describes a person who has an unhappy life.
