第一部分 阅读理解（共20小题; 每小题2分，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
An 80-year-old man was sitting on the sofa in his house along with his 45-year-old highly educated son.
Suddenly a crow（乌鸦）perched on the tree near their window.
The father asked his son, “What is this?”
