题目：
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| It was a cold winter day that Sunday. The parking lot to the church was 1 up quickly. I 2 as I got out of my car that fellow church members were whispering among themselves as they walked to the 3 . As I got closer I saw a man leaning 4 the wall outside the church. He was almost lying down 5 he was asleep. He had on a long coat that was in 6 and a hat topped his head, 7 down so you couldn't see his face. He wore shoes that looked 30 years old, too small for his feet, with 8 all over them, his toes 9 out. I assumed this man was 10 , and asleep, so I walked on by through the doors of the church. We all 11 fellowship for a few minutes, and then someone brought up the man outside. People gossiped, but no one 12 to ask him to come in, including me. A few moments later church 13 . We were all waiting for the Preacher (传教士) to take his 14 , and to give us The Word, 15 the doors to the church opened. 16 came the homeless man, walking with his head down. People whispered and made faces. He made his way and up onto the pulpit. When he took off his hat and coat my heart 17 . There stood our preacher…he was the "homeless man." No one said a word…the room was 18 . Then the preacher took his Bible and laid it on the stand. "Folks, I don't think I have to tell you 19 I'm preaching about today." They he started singing the 20 to this song: "If I can help somebody as I pass along, If I can cheer somebody with a word or song. If I can show somebody that he's traveling wrong, …" | ||||
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答案：D题目分析：：①浓硫酸与铜在加热条件下反应，不加热无现象，故①错误；②浓硫酸具有吸水性，可使胆矾失去结晶水，颜色变浅，故②正确；③浓硝酸具有强氧化性，在常温下与铁发生钝化，不能观察到绿色，故③...
