Ⅰ.阅读理解(共15小题；每小题2分，满分30分)
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？”
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