:2019人教版高考英语一轮复习必修52Unit2知能演练（有答案）

 
Ⅰ 阅读理解
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(2018•合肥高三调研性检测)In our everyday lives we meet situations in which we take many things for granted. We only treasure things when they are gone. This is a sad truth of human nature. One day, I found myself as a witness to a similar situation.
One evening, I left work and boarded the train. After entering, I noticed something unusual. The center of the car had a few  empty seats while both ends were crowded with people standing. I didn’t pay much attention and sat down on one of the empty seats. I sensed a funny smell. It wasn’t long before I noticed a homeless person sleeping on three seats in front of me. He was bleeding from his nose. Why wasn’t anyone helping him?
His clothes were torn and he was giving off a strange smell. Along with the smell, his eyes were dull, watery, and red. Occasionally he scratched himself and people looked at him as if he had committed a crime. As the train stopped at stations and more people came in they covered the