问题
单项选择题
驱汞治疗的药物主要为（）
A.CaNa2-EDTA
B.亚硝酸钠
C.Na2S203
D.二巯基丙磺酸钠
E.CaNa3-DTPA
答案
参考答案：D
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驱汞治疗的药物主要为（）
A.CaNa2-EDTA
B.亚硝酸钠
C.Na2S203
D.二巯基丙磺酸钠
E.CaNa3-DTPA
参考答案：D
December 24 arrived along with a heavy snow. It was my first Christmas Eve without my mother, and the day’s usual 36 had disappeared. The telephone rang. I 37 it and went to my bedroom to bury the continuous 38 , knowing it must be my friend Rebecca calling. How could I be 39 ? I wanted to be left 40 . My heart felt as 41 as the falling snow. 42 can I stop missing my mother? I 43 the window. Seeing Rebecca’s car parked out front, I went back to my bed and drew the covers over my head. “Lucy!” she shouted. “I know you’re in there. Answer the door!” “Leave me alone!” I 44 back. I heard paper rustling(沙沙作响) as she slid 45 under the door. “Merry Christmas, ” she called out. Not answering the 46 made me even 47. It wasn’t fair to my best friend. Her father and sister 48 in a car accident when she was eight years old. 49 , her mother had to return to 50 , and Rebecca was left to look after herself. When she left, I carried the small package, sat down and 51 it. Inside was a golden pen and a journal. When I opened the journal’s front cover, out fell a bookmark with a(n) 52 written on it: Dear Lucy, My words won’t heal（治愈）the 53 . But your own words can. Love, Rebecca As I stared at the journal’s blank pages, a single tear fell on the page which quickly absorbed it. That night, I 54 the phone and dialed her number. “Looks like the snow is melting(融化), ” I said. “Spring was just ___55____the corner.”
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